Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c1de22e67be3c4…

MALICIOUS

PDF

90.2 KB Created: 2021-04-07 08:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e561897ebd5dbfa1e26ef0faa266887 SHA-1: ec8ceec0cfd5bed6a0b9141bcfaef1f9cb37155a SHA-256: 34c1de22e67be3c4ed9746892e2670ba5c558b3d9cde034dfaa079b4109c8630
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a significant number of external links, a technique often used for SEO farms or to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of external links suggest an attempt to exploit users, potentially through a phishing lure disguised as nutritional information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/123?utm_term=chicken+shawarma+plate+nutrition+information
    • http://nomenowunesazoz.scienceontheweb.net/betta_fish_breeding_guide.pdf
    • http://topcreditcheck.info/moroduvilujif2g9z.pdf
    • http://motarojetox.sportsontheweb.net/13087399186.pdf
    • https://static.s123-cdn-static.com/uploads/4470977/normal_5feee0ad696f6.pdf
    • https://cdn-cms.f-static.net/uploads/4484624/normal_60605bea77cf6.pdf
    • http://ecoservice-vlad.ru/photomath_plus_apk_free_download_ios2tygt.pdf
    • https://cdn-cms.f-static.net/uploads/4445555/normal_6065d74603472.pdf
    • https://static.s123-cdn-static.com/uploads/4489844/normal_5fe27cf803625.pdf
    • https://cdn-cms.f-static.net/uploads/4424040/normal_602481cf6c850.pdf
    • https://static.s123-cdn-static.com/uploads/4463300/normal_5fcae6b6359f9.pdf
    • https://cdn-cms.f-static.net/uploads/4417205/normal_60546bdbd8c1e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_848f7633a73b45f999a67eebd4593b7a.pdf?index=true
    • https://ce83042b-5faf-46b5-bcbb-9b4d05ec7d33.filesusr.com/ugd/a31856_50f8ab5fdc544692aa0dd6566fa8b82d.pdf?index=true
    • https://9df6fdd8-df71-43fb-87ad-b121b2de7416.filesusr.com/ugd/e0d0cf_3bc7c5bf0be847a6badfd075fa99a33f.pdf?index=true
    • http://nujugeteteda.myartsonline.com/kolepadibuburewemofezenir.pdf
    • https://d45380bd-a93d-4ef2-b2bd-4c7806d1f6db.filesusr.com/ugd/5d2cf3_a0f5e62822cb41dbabc61e8d210a2ff6.pdf?index=true
    • https://2cc935b2-b854-4d3d-8499-e3bac5ec7384.filesusr.com/ugd/2e82fc_d6afd2ae5e1f40318dfb65fdce6c7e58.pdf?index=true
    • https://e0f910ba-f4aa-4d6b-87f6-24d78cda99ab.filesusr.com/ugd/cc15ef_0a45a4a03b534193986d46d90b15ed32.pdf?index=true
    • https://2225f16e-b6a0-48e2-a067-d7e802b71dd4.filesusr.com/ugd/a7ada4_ff4e9dd004004339b6c6fc624ee37d75.pdf?index=true
    • http://lelikerakovet.atwebpages.com/88548727194.pdf
    • https://1f2f8e77-98df-4c5e-b88a-83bc2b612b58.filesusr.com/ugd/5c7528_60a994a0f3ba4c53899d67c17c34456b.pdf?index=true
    • http://natukifuza.atwebpages.com/chemistry_notes_for_class_12_chapter_solutions.pdf
    • https://c01188fd-d8af-4b86-846b-090f7ecd58d8.filesusr.com/ugd/9058e5_3194d30db6a74193aa4e499959c2d411.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010bd9.bin
7a4d8a7af1db9a0937125236ceaa4e1c28de062301b6f4ebf2ba190ce9c7fefd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD9 5316 bytes
font_01_sfnt_off00011dd4.bin
2e6379b487241bb4d93f19d41d08b0028d5d30d03ae8a9f7a91e3daccfff2790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DD4 11628 bytes
font_02_sfnt_off000145ea.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145EA 16092 bytes

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