Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb437f4de1d24789…

MALICIOUS

PDF

49.6 KB Created: 2020-11-01 23:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6ffd1e9da459d65759370dc2fdaabcdc SHA-1: 23c72f446823edf638e947075078c7f5407ab01e SHA-256: fb437f4de1d24789b1da7896a87a18284614c6142ab1ac00c6c5ea5c6a72a290
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/pify?keyword=aura+kingdom+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4449170/normal_5f9efd72ca4c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366042/normal_5f89f72d39a64.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/sanapedukeputup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f924527d4800.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5f988641e4861.pdfIn PDF document text
    • https://zitidatuviwe.weebly.com/uploads/1/3/4/4/134493200/9265619.pdfIn PDF document text
    • https://zozilevijuni.weebly.com/uploads/1/3/1/3/131383476/2d537b7a.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/tetazino/44467418886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5462/0059/files/bose_soundlink_bluetooth_speaker_iii_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/7740/3292/files/53861126152.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/do_i_wish_for_a_world_without_flame.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/xikodofuzajiko.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/scn_molecular_geometry.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7634 4792 bytes
SHA-256: 7e65d717e63de646592ac20f30ea5faefd41fd4b89175ae4739067515073a185
font_01_sfnt_off00008655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8655 11020 bytes
SHA-256: 461dabfaf38d060f004f918a9e7bca0889b12941ff96c0a6d49fe4e699e60476
font_02_sfnt_off0000abce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABCE 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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