Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c83422cb9256ca7…

MALICIOUS

PDF

45.1 KB Created: 2020-07-29 23:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d407129931b301a83cc0447167908da SHA-1: 7f7da7c81f4148a9a927d79ef1894695e4b3352d SHA-256: 8c83422cb9256ca7f56777a5e363cab1c7e152c170ed6ee814e1885fa9aab516
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links points to a known malicious redirector, ttraff.com, which is highly suspicious. The heuristic firings confirm the presence of a malicious redirector link and a large link farm, indicating a deceptive content strategy.

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=portuguese+spanish+dictionary+pdf In PDF document text
    • http://files.airbrushartstudio.com/uploads/1/3/2/7/132712057/baduf-denonalejubejur-binawofetawu.pdfIn PDF document text
    • http://files.thepromiselandcamp.com/uploads/1/3/0/8/130874102/272a00449bf6.pdfIn PDF document text
    • http://files.f3s.org/uploads/1/3/1/0/131070529/boluvosanirixebiba.pdfIn PDF document text
    • http://files.robertjamesallison.com/uploads/1/3/1/4/131437982/reduzijejap-lenasezolarijit-defoje-roriruge.pdfIn PDF document text
    • http://files.shizokukaratedo.com/uploads/1/3/1/6/131606984/jutojefovusisivopep.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/1/0433/4141/4555/files/jeririxituditinakozugekim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/bajuxiwenotedatam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/xinuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3296/1443/files/41769162109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9013/9549/files/2766958588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4453/files/57221231617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0014/3777/files/gomegasosejopezanegifudan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/30320198270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/ruvedatusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5567/6568/files/58125153575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/sojenenibavipozod.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_off0000734b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734B 5368 bytes
SHA-256: ec1bee93f4aba235eb4e1da991468d9cf81e2ccfa9791a2aabf2ceb63e1219d9
font_01_sfnt_off0000858e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858E 9896 bytes
SHA-256: 529f1b0eeeeeff6887f5f80cc9d914e26a92c4d7840f0aa75d728999200e2ed6

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