Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e42b9360934961…

MALICIOUS

PDF

106.0 KB Created: 2021-03-19 12:02:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 8afb8a38fcd8e085a5be613abd402a51 SHA-1: 191bbd6ed14f4c4dd00d98ba08ab92b60d9f9c33 SHA-256: e3e42b9360934961475ed5c30860b71e217ed6e6b524dfd07f1918d2b8f19b4b
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm used for phishing or malware distribution. The primary external URL observed is https://seumenha.ru/wix?keyword=lr+teq+vegito+blue+hidden+potential+guide, which is likely the initial lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=lr+teq+vegito+blue+hidden+potential+guide PDF link annotation
    • https://befukifesili.weebly.com/uploads/1/3/1/4/131453358/bovulitugup-kufaf.pdfIn PDF document text
    • http://rapelubide.22web.org/when_to_use_with_in_sql.pdfIn PDF document text
    • https://sanofawuvi.weebly.com/uploads/1/3/4/5/134588151/linitesag_wudide.pdfIn PDF document text
    • https://jatilupek.weebly.com/uploads/1/3/4/4/134491857/somidu.pdfIn PDF document text
    • https://xibemorebag.weebly.com/uploads/1/3/4/3/134355918/xexarufafe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1bf92926-22d0-44a1-94fb-b51843c41cd5.filesusr.com/ugd/762c1a_285c17c7ad1b4602a831a20f270ebbb2.pdf?index=trueIn PDF document text
    • https://6ba812fd-7407-468e-a879-d7284e591ed6.filesusr.com/ugd/31a575_58e0860187ec442faba1853dfe3c3476.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebbca1ca-ccf6-45f7-8d16-52fe641c59fd/45553207449.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/cabrestante_manual_gan_mar.pdfIn PDF document text
    • https://3d1db4d0-c196-4dd3-8d5c-bb108cafbd43.filesusr.com/ugd/479e38_c47ce76690dd45d6a682aaed33505b03.pdf?index=trueIn PDF document text
    • https://35e1cc1d-5f6c-4a41-9b1b-b9ae8dddc97a.filesusr.com/ugd/351eee_da458d4c68a04db8aa70b5dd9358fe35.pdf?index=trueIn PDF document text
    • http://kavexuvosa.epizy.com/roxakojisidefo.pdfIn PDF document text
    • http://dugexirawotuv.rf.gd/22384009748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2db4b483-a5dc-4112-bcaa-c383f2b79b4d/supekusowuwusitigivazev.pdfIn PDF document text
    • http://xelidev.rf.gd/86945545130.pdfIn PDF document text
    • http://tozoxuzev.epizy.com/minecraft_bedwars_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f91a851f-a828-49d4-bb02-c7379bcdedef/yamaha_yht_4920ubl_price_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/zakosoxafuxapagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0644286a-f4af-421c-8c8a-df16b065af92/is_lg_rebel_4_a_good_phone.pdfIn PDF document text
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_af3d586618104b69b60056238097cde0.pdf?index=trueIn PDF document text
    • https://ca39a19f-16f9-469f-ab0b-65ec0463b8d0.filesusr.com/ugd/cc9b97_a899555e5d734b61b776f41948cb8a4c.pdf?index=trueIn PDF document text
    • https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_a379780c3c3a439980e86f1ebcc465e2.pdf?index=trueIn PDF document text
    • https://b1706aec-e9b1-4c6c-9a93-f14ef4a1c402.filesusr.com/ugd/3b47cb_f440a44ace8b495995440fba9619d2f6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/161f40dd-3cfa-46f8-9f4d-1f6a46a68b90/mafirofamenulobetapuf.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://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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11840 13720 bytes
SHA-256: ee598b5ae2150f4960f4c34c977cc755dadd6d840eceee0a47e397aa3acd092b
font_01_sfnt_off00014485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14485 5312 bytes
SHA-256: 1fed163971ccbaba05c69731480211d006b005ff4c9033384512b90876611d89
font_02_sfnt_off00015686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15686 13320 bytes
SHA-256: 4bdfaae94cb2469bcbd703fa98810e8a19828ebd73f15708f33820d04d5c6ddd
font_03_sfnt_off000180f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x180F4 17000 bytes
SHA-256: 025c913462d4c208760f834b9560c428c11b2cadfad48a9efeeaf877ac570f89

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