Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b5de281025b5961…

MALICIOUS

PDF

40.4 KB Created: 2020-08-19 08:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b92aadd2e217d803e5d4e225f8fc77fd SHA-1: a0546ed0bf1716c4bc04bbbdc414cb2f2fb7707c SHA-256: 4b5de281025b596141524b61dc706cf9ad0b7c32f9b2a8d6c704059834300924
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised as a bodybuilding workout chart. This redirector likely leads to a malicious payload or phishing page. The PDF also contains a link farm pointing to numerous other PDFs, many hosted on Shopify, which is a common tactic for SEO poisoning to drive traffic to malicious sites. The ML classifier strongly flagged this PDF as malicious.

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=bodybuilding+workout+chart+for+beginners+pdf In PDF document text
    • http://dodib.gocprny.com/uploads/1/3/0/9/130969762/wabewoxobid.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/1/0433/0687/7080/files/78682713185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4982/6969/files/butterfly_valve_tozen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/wopawutizigaverobepibux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wozofedotomutigetipire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0198/4662/files/20668126306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/zidiwej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55628578329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4404/files/87649496379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/ps3_gta_5_mod_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7154/files/s._mzstatic._com_e2_80_9d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/55885158409.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_off00005dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD7 5864 bytes
SHA-256: 2b04abe0de8fbee49bebc3d16ff1c8c05d94434202eb610de3f8fffd1819f6bb
font_01_sfnt_off000071dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DD 10268 bytes
SHA-256: 5367fef50ff203621d8aa9e8544aa5c4b58e86729c40cd1ca508a58e25b7e827

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