Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dc3b97dabe4743e…

MALICIOUS

PDF

44.7 KB Created: 2020-07-29 22:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cce6c7e1986c25ee42125bad2c39ce0b SHA-1: 8cc76215f0427105d91ee55bc84d2c6b2f751204 SHA-256: 8dc3b97dabe4743ea928199f43c4e0b5f545f7044bf929243a6d0c05606424d1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is ttraff.com, which is part of a link farm strategy. The document body is heavily obfuscated, but the presence of SEO-related keywords suggests an attempt to lure users through search engines. 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.com/pify?keyword=business+plan+presentation+sample+pdf In PDF document text
    • http://files.draustinsaysso.com/uploads/1/3/0/7/130740158/koruwilomej-pirogukula-xewoziwe.pdfIn PDF document text
    • http://files.womenofthemorningstar.com/uploads/1/3/0/9/130968956/f22ba60b.pdfIn PDF document text
    • http://files.rogueut.com/uploads/1/3/0/7/130775076/7676070.pdfIn PDF document text
    • http://files.hvcresearch.com/uploads/1/3/0/7/130776249/vorekagepal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/93097486132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/71904658730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/30768958880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/xabutubutujutagaxifimodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8406/9526/files/mawiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7429/files/90869452313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/dawemelolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/begobifolivoviluneweri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/89848870785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8845/3533/files/87454607570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/43043460153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/sinataz.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 7

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_off000072dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72DD 5116 bytes
SHA-256: ca3b16c733d2d553a311d4b02bcd488c09ecdfe701d0a43553de17d002f8c550
font_01_sfnt_off0000841e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841E 9824 bytes
SHA-256: 5596ea03e8c7e5af33eaa70a6a1fa901043797c78b14fd735b633610cb15fa1e

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