Malicious PDF — malware analysis report

Static analysis result for SHA-256 81a6f35d756924e2…

MALICIOUS

PDF

42.6 KB Created: 2020-08-09 00:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9a2892f0eeccb6c9f87a523544c42d7 SHA-1: 39085ec999863e8f607e9805da56d88b6ba586bd SHA-256: 81a6f35d756924e2b5b157a9a9b6c20d80e9c5126c1d098c9d97b0d8c6c07d4c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure like 'ttraff.com'. This suggests a phishing or scam attempt, likely using a lure related to the 'encyclopedia of modern bodybuilding pdf' mentioned in the document body. The presence of multiple PDF links, some pointing to unknown domains, indicates a link farm designed to distribute malicious content or lead users to phishing sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=the+encyclopedia+of+modern+bodybuilding+pdf In PDF document text
    • http://duwuge.centerponddistrict.com/uploads/1/3/1/3/131398140/zugusakozasulewezus.pdfIn PDF document text
    • http://files.amorrusticarts.com/uploads/1/3/2/3/132303075/gapuwakupap.pdfIn PDF document text
    • http://files.pendowerhouse.com/uploads/1/3/0/7/130775156/1e939a3e1.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/1/0430/4479/8613/files/33098499593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/dizupigoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/36396486552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/58595542764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/wipamanisamuziba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4229/files/41633131185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6863/files/dowonunosalewibetelageje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/vuzaxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/academic_transcript_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/63450290948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9055/8620/files/gaxijekepovivakuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/65970843016.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 2

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_off00006794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6794 5584 bytes
SHA-256: 75917f589803d671b2fea33cb1765fff3cae16e3cf88640c1a58033feb5839e2
font_01_sfnt_off00007a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A70 10216 bytes
SHA-256: 05e60a0fdc6ba94d3b106cab24c7006e453fb6ce2b3381badb89c00b6f405788

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