Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7b70c888c8ff9d5…

MALICIOUS

PDF

41.3 KB Created: 2020-09-10 04:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e2b79839c68c8240ed52faa48accb817 SHA-1: 89d799468cdae82f4d7443b8ea0f27900a1c9615 SHA-256: a7b70c888c8ff9d5f70678045836d6205ea15b201516d9a562f538b8762bf82d
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, including a critical redirector link to 'ttraff.club' which is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'vshare vip free pc', suggesting a lure for potentially unwanted software or further malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.club/wix?keyword=vshare+vip+free++pc In PDF document text
    • http://files.youngsdiscountbridal.com/uploads/1/3/2/3/132302941/rumegovubosogisan.pdfIn PDF document text
    • http://files.comsenfit.com/uploads/1/3/1/3/131379949/397b0.pdfIn PDF document text
    • http://gixef.stintongardens.com.au/uploads/1/3/1/3/131381787/391305.pdfIn PDF document text
    • http://files.larochebluegrass.org/uploads/1/3/0/8/130813413/741f1b4ba4489.pdfIn PDF document text
    • http://jepowuwu.sithappensmt.com/uploads/1/3/0/7/130776277/vavar-xexukuja.pdfIn PDF document text
    • http://files.paminingprofessionals.org/uploads/1/3/2/6/132695428/9898824.pdfIn PDF document text
    • http://files.aaquizbowl.org/uploads/1/3/1/8/131857304/ed647f417a97.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/2f7815_449165f6727a476bafe7aa46f2d73cdf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f967ac_022fa77e48c641e1ae6c16cb92627c86.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/694d5d_0886113bd25d4f07bf25ba21f0b86376.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/defdb4_6f103f894dd549cfb1253ed7102178d3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4d6844_75f5698abad54623a9efcaae33717737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/nemasusixid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/53753018585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2985/6155/files/chaitrada_chandrama_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4328/3104/files/52562734041.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_off0000653e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653E 5096 bytes
SHA-256: fad7b10c30a39348cc5e5f6a4d7ff72e821050b7fb28e9b4cb99f6731f043c21
font_01_sfnt_off0000769c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x769C 10012 bytes
SHA-256: 1a4202b724d197e0bf8526a136e40b13377bab352b526749e36dfa223a210c31

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