Malicious PDF — malware analysis report

Static analysis result for SHA-256 42eb0311de340846…

MALICIOUS

PDF

78.1 KB Created: 2021-06-01 02:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1aeabaee333273d2754783c96e4aa141 SHA-1: fcc03dff0bd517b1502d1c5baba8c54788074822 SHA-256: 42eb0311de340846936d5a1374c12e10192ef55eb8e3c0ce76bcfe42828a9e77
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://coretry.ru/uplcv?utm_term=lumber+tycoon+2+axe+dupe+2020 PDF link annotation
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/7ed6b42d7d40d66e105b8ccb4aa4254b/42579365459.pdfIn PDF document text
    • http://arslanemlak.come/file/fofapu.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/jibobaxedibukumedudirasex.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/cfl01ssn0op0ehr4b46l1c6um3/rorijitanivi.pdfIn PDF document text
    • https://infiniteprospects.com/FCKeditor/file/65115636129.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/b781b74f8381729c42a6e95269518409/98922583117.pdfIn PDF document text
    • http://greatnice.club/updatefiles/file/9434237021.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/hoc800povmgn46rjo5nehn1952/10074686728.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/13587534417.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/ef6d084418e885db1aedf477f1bacef0/90467481427.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/26710681409.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/a71093d0e783d210eeda3361607d6ab9/kodagebevuwisezozuzi.pdfIn PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/dexoruj.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/8ae601e7903882b078341778fe1a9c57/jipasurelikililapo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086542bb7f47---vinenetus.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/37b72a3b0feb3c116a802dc99c58e950/81498207758.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/85371726141.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608c33ddeafa2---48077913510.pdfIn PDF document text
    • http://wallsfamilyreunion.com/clients/876683/File/wuwitibizapejamoxetividib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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_off0000dd0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0B 5532 bytes
SHA-256: a2ac8d072d8f0573cfc2c7b3389e8edb60e69634d4aead34ac63c640d8df4e2b
font_01_sfnt_off0000efcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCC 10516 bytes
SHA-256: 87b7f9c39b113c6b5e87b4886e9d79af767fdf8a44d48558b2b1c1278f335875
font_02_sfnt_off00011407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11407 16592 bytes
SHA-256: d01da227763dd1268137ae4b995fb9af6bf7f8ffb759543b54d8d019ecb2a799

Open this report in the interactive analyzer, or submit your own file for analysis.