Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e1d36647fd434d…

MALICIOUS

PDF

71.5 KB Created: 2021-04-07 10:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 04c9a78532c2901ba51e552f54dc0596 SHA-1: f407b5450f2781d8e93ef72c1abcf8e0dd89f260 SHA-256: 60e1d36647fd434d530126703af88952678557812d41db5ed98aa66963556328
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying a 'PDF_SEO_LINK_FARM' suggesting a large number of outbound links. The primary URL, 'https://leonvi.ru/wix?keyword=clash+of+the+titans+free+download', indicates a lure related to a popular movie, likely to attract clicks. ClamAV detection and ML classification confirm the malicious nature, pointing towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • 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://leonvi.ru/wix?keyword=clash+of+the+titans+free+download PDF link annotation
    • https://mamubata.weebly.com/uploads/1/3/4/5/134598765/ded3d1ca308.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422645/normal_6067c8f47fed4.pdfIn PDF document text
    • http://tafiwon.mywebcommunity.org/produccion_de_acidos_organicos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488346/normal_604dd3392ba03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388820/normal_60293e8c50fdd.pdfIn PDF document text
    • https://rabivavas.weebly.com/uploads/1/3/0/9/130969809/8744913.pdfIn PDF document text
    • https://filukekab.weebly.com/uploads/1/3/4/4/134478490/dopuxegizurer.pdfIn PDF document text
    • https://kelebewo.weebly.com/uploads/1/3/4/3/134359650/dbaa0a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455670/normal_6060691640995.pdfIn PDF document text
    • https://ruzuwigowan.weebly.com/uploads/1/3/1/4/131453288/jogobepapebob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412887/normal_6051b2f25529e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/figaxum.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/animania_apk_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/zukumed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6c3ba86-ec39-4673-a67f-b3b8dd3ab903/girl_from_ipanema_stan_getz_transcription.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5d332d2-9b29-4bf1-9c41-cabb66724d20/how_to_breathe_during_heavy_exercise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e26388-5d1f-4bf8-9c42-07cbdb59c55c/where_to_buy_west_bend_stir_crazy_popcorn_popper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c9f3ff6-cdc6-4150-a321-3636786741c6/audre_lorde_sister_outsider.pdfIn PDF document text
    • http://xipanizi.myartsonline.com/fundamentals_of_astrodynamics_and_applications_2nd_edition.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/vapan.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/43332145829.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/plural_form_of_cupful.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d87857f8-35f7-4165-aa1e-f3e388e7c7f6/kajabagorasisikuves.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA61 4992 bytes
SHA-256: 22dd0f2962dc0cd0b993652bb58b0e91310c1728b449f02ed12db8f1874286ec
font_01_sfnt_off0000eb64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB64 10860 bytes
SHA-256: 43377d31633c22deb771291944bff26ba117d442831c1ed861e12e69dd42cb1d

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