Malicious PDF — malware analysis report

Static analysis result for SHA-256 a47c63e5db59658e…

MALICIOUS

PDF

68.8 KB Created: 2020-11-25 02:59:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 71aa11bb0a2baef412d3794646dd4729 SHA-1: dbd3b6ffaa9b9e87667cd8312f83c8df4716e555 SHA-256: a47c63e5db59658e0ebf1225fb5c18391280d185ed1bb8460b26e5092042975e
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 0.9997

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://trafffi.ru/aws?utm_term=professional+film+storyboard+template+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426677/normal_5f9bb380cadaa.pdfIn PDF document text
    • https://pukuxenusafo.weebly.com/uploads/1/3/4/7/134711282/dawiduremosikovajo.pdfIn PDF document text
    • https://ribapapa.weebly.com/uploads/1/3/4/4/134479292/d306e7451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412174/normal_5f99624ec5dfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446643/normal_5faaafa5a200d.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/1463696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f872dc573bf7.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/kekibedukugikodop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/057e3ae0-e0b7-4022-8f4a-558872a8b725/peter_singer_animal_liberation.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/challan_281_in_excel_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45847ea8-3984-43ac-9f9b-c5ee96a9c0f9/36724819275.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/zemezosopidosemojol.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/top_ten_guided_by_voices_songs.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_off0000d0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E2 5432 bytes
SHA-256: 6009fec2eca36dd5321f228365257ed05b1a92a0ef3775d092298d2f0db8e48e
font_01_sfnt_off0000e347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE347 10372 bytes
SHA-256: f20766b1aed883fc6683b5d93d3526c7c35084a657685a1b9c7c51f67cb93f6f

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