Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ececbd15a6e472f…

MALICIOUS

PDF

190.5 KB Created: 2021-08-05 02:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 9ae48a2510cda65005506894f36e15ba SHA-1: 8e9552ff9608858a6393418380effa6d21327d1f SHA-256: 1ececbd15a6e472fb3d659f619cbc4678fc6e7bdea9be3363cf162918d3fbb7d
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document was flagged by multiple heuristics, including a specific advance-fee scam lure, indicating its malicious intent. The document's structure and embedded URLs suggest it is part of a phishing campaign aiming to trick users into paying fees for non-existent prizes or parcels. No scripts were extracted, but the PDF itself contains numerous links to potentially compromised or disposable hosting sites, which are likely used to host the malicious PDF or redirect victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9510

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mfdesign.hu/files/file/pipibuliwomiza.pdf In PDF document text
    • http://ks4073.com/file_media/file_image/file/jorijuxifan.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/65bcfd9d45c87b456e50c639d52f64d4/zabisozedekerikibuwu.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/f8ae662593b12bdf531bcb512f540146/66480424979.pdfIn PDF document text
    • http://kassa.pl/userfiles/file/taferevivu.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c973d2adc28---bomabisavazijorovi.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/pawalokavukowilosepe.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/d6c4cf0378fb38c1da8d3c729502d8fd/lesevaberiro.pdfIn PDF document text
    • http://signauction.net/userfiles/file/lomarijubora.pdfIn PDF document text
    • https://vkgnassociates.com/dayafter/uploadimages/newsimages/file/2399163955.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/82staiamondg1mg6rfq5flnse4/pasamatagutupelekamu.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4e2f79594---rubesalaraxar.pdfIn PDF document text
    • http://ksnjl.com/userfiles/files/3743293092.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a69fef89b3a---63767012707.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/nismhqreknkl8dcgca091id6f1/rovuxavuwulo.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e803ae5b3---pisuserifumanasot.pdfIn PDF document text
    • http://bestorkate.com/uploads/ckeditor/files/8639085393.pdfIn PDF document text
    • https://dogathermalhotel.com/resimler/files/mifosejuzipuxebuk.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/81757009850.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/8248cd7a8f59bff534d977d793a26a0a/gebisodakafasolimid.pdfIn PDF document text
    • http://abnicum.ru/files/file/doxabuvukudatofigaxox.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/56561960922.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/jor52jttd38unshrqh3ceb4fh0/kexero.pdfIn PDF document text
    • http://nwatchonline.net/userfiles/file/numosogusesu.pdfIn PDF document text
    • https://securitegenerale.tn/userfiles/file/36947531233.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=arnold+schwarzenegger+encyclopedia+of+modern+bodybuilding+wikipediaPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00027694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27694 20700 bytes
SHA-256: eb5ebba95727b768c89d876e9e3ca0c484030496c4139fdba0a7c704ddbe053a
font_01_sfnt_off0002ac91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0002c49e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C49E 2240 bytes
SHA-256: 8be808fbe95dd25aaaa18e3609c2ce6fabd13f2c6e196c933b55b8f10a0f202c
font_03_sfnt_off0002ceb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEB2 11544 bytes
SHA-256: 2cfa322e8d12d2b41102173f52753546eaa20f694aee4c283415dd3ce2ff1162

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