Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a41f123aac67b85…

MALICIOUS

PDF

72.3 KB Created: 2021-03-14 03:29:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 94963fa702011cac6ba92f02ebc89d52 SHA-1: 95a56dd2e86b948a0e2d12cb65c9c8c93bfccabc SHA-256: 6a41f123aac67b858582eb1b8d7d1c97ec32484b0a76cc9fa90533e3b5017df9
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/strik?utm_term=konica+minolta+bizhub+c224e+drum+chip PDF link annotation
    • http://mizizufiku.mywebcommunity.org/20447602417.pdfIn PDF document text
    • https://zujavezamuni.weebly.com/uploads/1/3/0/9/130969293/lagujinomugebetijene.pdfIn PDF document text
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/mimajovajuritogez.pdfIn PDF document text
    • https://sedanafijokam.weebly.com/uploads/1/3/4/8/134888359/wilinigine.pdfIn PDF document text
    • https://xowiwive.weebly.com/uploads/1/3/1/3/131398234/bizagolidase.pdfIn PDF document text
    • https://renunuvejo.weebly.com/uploads/1/3/4/7/134710344/deruzirutosuvudid.pdfIn PDF document text
    • https://bufujibuku.weebly.com/uploads/1/3/4/8/134862056/3244747.pdfIn PDF document text
    • https://zejobivajetipud.weebly.com/uploads/1/3/0/7/130740466/756029.pdfIn PDF document text
    • https://xisuludibu.weebly.com/uploads/1/3/5/3/135300694/bomivejovu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bojepudadadax.atwebpages.com/38153542544.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/apartment_rent_agreement_format_in_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9368dfb4-2945-4c7b-b105-4902511f7fa2/jadijizigarumawu.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/why_boats_use_knots.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/what_is_grounded_theory_in_nursing_research.pdfIn PDF document text
    • http://darewuxopasog.rf.gd/what_bodies_of_water_border_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0300807-9a83-4718-a589-65f0edf017a3/fedex_drop_box_near_me_with_saturday_pickup.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/1694936767.pdfIn PDF document text
    • http://pogetowem.onlinewebshop.net/67010489315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/923a65d5-43b6-4285-a94d-042539aad5d3/vishnu_sahasranama_marathi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2f7857c-6157-4357-9a7b-9057cee78b41/sam_harris_lying_audiobook.pdfIn PDF document text
    • http://liroporegabofi.epizy.com/bin_bulaye_baraati_movie_full_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09db780f-d5cb-467a-8595-f9db3a450cc0/kuxuvoki.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D3 5516 bytes
SHA-256: a6227242e6def91bef92f643895de198bd94d26f24569dd151505a0bf1b54994
font_01_sfnt_off0000e977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE977 11904 bytes
SHA-256: d05a0c3903db23af84d52b8294bda03c2c2d88507f63b9fa1839dd4f69fc586b

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