Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6bf899956ee481…

MALICIOUS

PDF

50.5 KB Created: 2020-07-29 21:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 531d3660e85610110d3e32bbec1ce5c6 SHA-1: e642975d200c36c3e839c6df462dbdbb52791af1 SHA-256: 0d6bf899956ee4812df4ff887b928388d2dbd98fc349cad6238c3ce18c7b6ec3
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, specifically pointing to 'ttraff.com' as a redirector. The document body, though heavily obfuscated, contains text related to 'define antibiotics pdf', suggesting a lure. The presence of numerous embedded links, many pointing to Shopify domains, further supports the SEO link farm tactic. While no scripts were explicitly extracted, the PDF structure and redirection URLs are strong indicators of a phishing or malware distribution attempt.

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=define+antibiotics+pdf In PDF document text
    • http://files.freewheelingwriter.com/uploads/1/3/2/6/132695372/6239418.pdfIn PDF document text
    • http://files.midmodcollective.com/uploads/1/3/0/8/130813841/bc994b949ddb1d.pdfIn PDF document text
    • http://files.utcpanhellenic.com/uploads/1/3/0/7/130774993/nosasifusafi.pdfIn PDF document text
    • http://files.fichautauqua.com/uploads/1/3/0/7/130775776/484f03f23a.pdfIn PDF document text
    • http://files.moraviabaptistchurch.org/uploads/1/3/1/3/131398360/35bc98.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/1/0433/7877/0076/files/nepoxivigenur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/bodul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8167/8494/files/modizenobeligefajibegezeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0672/2211/files/77525064496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/30231473306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/xosuvotepibilagofesal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/43882426324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/nojek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/sasiguwezimifapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/87202701417.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 5

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_off00008497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8497 4948 bytes
SHA-256: fe0b1a60c6935ea42cc8311919392c9d5669252951a3896b043c65c6a1310e74
font_01_sfnt_off00009577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9577 11400 bytes
SHA-256: 500c1c1a60c7c5f081251ff52efe2e45d6a328c16e3f5aa299f13724eb40d22f

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