Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2a65db2e726fb0…

MALICIOUS

PDF

33.0 KB Created: 2020-11-06 17:17:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: afe55bb6f4bce622f5ad06076c74d44a SHA-1: 1d38ef65e2bbf86601e900bcfc8a91f9a3dd6fa6 SHA-256: 7d2a65db2e726fb07b1619c001ef7f61977c85bf842a1e6254737eb563e19586
66 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and is flagged by ML classifiers as malicious. The document body, though partially corrupted, suggests a lure related to "The Raven" by Edgar Allan Poe, likely to entice users to click on the malicious links. The presence of multiple external URIs, including one on disposable hosting, indicates an attempt to redirect the user to malicious content or a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffnew.ru/123?keyword=the+raven+edgar+allan+poe+pdf+worksheets PDF link annotation
    • https://xoxebugifujame.weebly.com/uploads/1/3/4/4/134478015/8750441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5f8eccc1062e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402953/normal_5f9a32685d115.pdfIn PDF document text
    • https://mifuvepezomiluf.weebly.com/uploads/1/3/4/3/134312517/039ba.pdfIn PDF document text
    • https://lewejasolon.weebly.com/uploads/1/3/1/4/131437246/8243734.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_5fa2ce3dc7623.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/laradusa/7447368931.pdfIn PDF document text
    • https://rotadenig.files.wordpress.com/2020/11/82236523173.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a995b67f-ea73-495a-b1c1-95d8218e9013/gold_d_rogers_bounty.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/pokemon_emerald_gameshark_cheats_for_emulator.pdfIn PDF document text
    • https://pokavatirog.files.wordpress.com/2020/11/16651957553.pdfIn PDF document text
    • https://mudupetem.files.wordpress.com/2020/11/risidogawa.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_off000042aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42AA 5468 bytes
SHA-256: df65b124e79460056ed1c78e61d284eaf8ec6e3f8bc9734d32d5d898f6964938
font_01_sfnt_off00005556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5556 9992 bytes
SHA-256: 21cecb1b381015780f1b7cc0f96b1f81430cc015c69bd623f1e3a52838da72c8

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