Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b5d7e53b77a205…

MALICIOUS

PDF

37.3 KB Created: 2020-08-17 12:23:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bb95b22c34b4ddda005e72db66d11d9 SHA-1: 3db1a9f002906d74ca47f0285b7517ad75048253 SHA-256: 88b5d7e53b77a205637df210612690ccc17d296fd2652d3da20e199f7c7f4e7e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. This suggests a phishing or scam attempt, likely using the 'free download' lure to direct users to 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.
  • 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.cc/pify?keyword=tri+fold+brochure+template+google+slides In PDF document text
    • http://files.12utct.com/uploads/1/3/2/8/132814342/908623.pdfIn PDF document text
    • http://files.dougalfineart.com/uploads/1/3/0/7/130738499/1566563.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/1/0434/0393/5902/files/86259342442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/the_bible_niv_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/jubasaruji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3013/files/lafiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/40174108984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/favaduladu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8242/4215/files/letajoxavumezalexani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/pudizifif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/jimoxoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8368/2212/files/cesar_aira_la_guerra_de_los_gimnasios.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 1

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_off000051ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51ED 5660 bytes
SHA-256: a79c5e6a4a1f093b2e4b5c2264dac27268bdeba7cbc4c77f2d1e77ff7f30bca0
font_01_sfnt_off000064ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FF 10560 bytes
SHA-256: ae422d4bc3c5fd6c981e04494c44fffbf9db82fbb26d823d9543798c1434d918

Open this report in the interactive analyzer, or submit your own file for analysis.