Malicious PDF — malware analysis report

Static analysis result for SHA-256 004857047e04592f…

MALICIOUS

PDF

81.3 KB Created: 2020-11-19 13:14:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3bbf12dd6cd4442fcf92f7d5d1cfb1f9 SHA-1: 2cbb7042517506505ab44aef6768330a86af81da SHA-256: 004857047e04592fd6484962039fb1398217a6c492ed319d4168d95a1ef1d47f
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://traffine.ru/strik?utm_term=archivos+borrados+de+carpeta+compart PDF link annotation
    • https://lepebixetuvenal.weebly.com/uploads/1/3/4/6/134634058/b183097fdfe4c3.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/tidevi-muxajamireja-jilatudiwixa.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/dc3e4d77ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386595/normal_5f9fcfa94d0b7.pdfIn PDF document text
    • https://sizuginoten.weebly.com/uploads/1/3/4/4/134490660/vuvuwubujan_rigezibo_tufejagaga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mamibis/dufuwawafarokitagika.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/15282494260.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/gifunuvatoka.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/bradley_cooper_movies_dvd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a6f0b13-2efd-45a4-a53f-5bc301dda0b8/cookie_crumbs_gacha_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f704bc1b-6f6f-4898-a13f-8683d1eee8a5/mupisifuxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c913cbb-ff6f-4af4-940c-45710e81563b/.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/worst_cooks_in_america_winner_season_18.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/discussion_points_for_readers_of_kindred_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a519595-984b-4c00-bce0-0b1adeb44e17/th11_upgrade_priority_guide.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06F 5152 bytes
SHA-256: 812046267849e25fa40269f09c3bcf30e6dbd57c6fd22eba1324f43bc3e6c5a2
font_01_sfnt_off0000f1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E4 4824 bytes
SHA-256: 36cb594c7848350756d636aa1fe7d1145d6a239a4a935c4870a7a3628c5d4896
font_02_sfnt_off0001026f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1026F 11892 bytes
SHA-256: 3d2bde32fe53327842f5eddd8e81d2336d9a047f154d88a31605d28d912988ac
font_03_sfnt_off00012937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12937 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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