Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d94adc563e0ad5…

MALICIOUS

PDF

80.2 KB Created: 2021-09-07 17:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 350f8f01ae9bf8f492100448576c4022 SHA-1: e5a09d1caaaa0349afd7a7817e72347594703931 SHA-256: 02d94adc563e0ad52abf819251ce7cee8a8c718a9fa360bf6f17160cc05473b5
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nomylo.ru/uplcv?utm_term=2007+porsche+cayman+service+manual PDF link annotation
    • http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/tidimixogolowegun.pdfIn PDF document text
    • http://ping-property.com/user_img/files/93314623440.pdfIn PDF document text
    • https://proxus.nl/file/kafizofusapelowiwudadip.pdfIn PDF document text
    • http://vonkoenigsmund.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb678b4038---35650684894.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/1cfbd5619c66d3e04f36a2cbae47909b/zanagiza.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/latav.pdfIn PDF document text
    • https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/51b82a97ef5c4ef2b26bf448c285f462/290256522.pdfIn PDF document text
    • https://relaxbotanika.cz/ckfinder/userfiles/files/dikigapovokuwuro.pdfIn PDF document text
    • https://equalland.com/uploads/File/77554386493.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f198765db3d---regone.pdfIn PDF document text
    • http://studiotecnicobergamaschi.it/userfiles/files/mujewubimed.pdfIn PDF document text
    • https://eternalbliss.net/file/72338516638.pdfIn PDF document text
    • http://shopsuathientu.com/uploads/userfiles/file/rixefulelidoje.pdfIn PDF document text
    • http://cesishotel.lv/res/wysiwyg/file/20104580370.pdfIn PDF document text
    • http://dekogard.net/deko/veri/_files/38687549214.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/8891aa002cc88a8d604fc0d1c5e62ddd/wapipolusabenamerogijegar.pdfIn PDF document text
    • https://erdenet.mn/userfiles/file/nubafetabigubinala.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/b3b06915e7112b4f88589b155a5ac29d/ninamotovak.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc7ed2878a---jididazumetiv.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a9610fa34---fafemivuwuropuvukuvevux.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/sepibisipubavididapog.pdfIn PDF document text
    • http://aliguoriarchitetto.eu/userfiles/files/14650294782.pdfIn PDF document text
    • http://hoanggiaphatland.com/uploads/image/files/rorim.pdfIn PDF document text
    • http://langmypham.com/luutru/files/monerojomomo.pdfIn PDF document text
    • https://dcoderesearch.com/uploads/mujimiganegubomug.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6ffd62f74a---11036778452.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ed03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED03 17252 bytes
SHA-256: e35856585a132aeff24250c8bb060d9d037ca69f526396ac4bebfecd6e9235ed
font_02_sfnt_off000119d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D7 11016 bytes
SHA-256: c934f3afa9a89116620e402f9e25a4105b53076d570dfd70de31a75dbd1d2b94

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