Malicious PDF — malware analysis report

Static analysis result for SHA-256 3391fa2d8337b918…

MALICIOUS

PDF

32.8 KB Created: 2020-08-03 05:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5d23d3d5d604d2fd0eefd823e04e5f9 SHA-1: 41139db7fe2b846ba859f006014a1d75b845f0bf SHA-256: 3391fa2d8337b918bf3aa2837efa7d1da550cd664ebf7eb4ff3929cb7fa3424b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised with a lure about literary terms. It also exhibits characteristics of a link farm, with numerous embedded links pointing to external PDFs, many hosted on Shopify. The primary malicious URL identified is ttraff.com, which is flagged as a redirector. The ML classifier 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.com/wb?keyword=essential%20literary%20terms%20sharon%20hamilton%20pdf In PDF document text
    • http://jozapopu.coolnativesnursery.com/uploads/1/3/1/4/131483200/zuruza.pdfIn PDF document text
    • http://files.sabrinahabib.com/uploads/1/3/1/4/131437967/6910139.pdfIn PDF document text
    • http://files.foramusementpurposesonly.com/uploads/1/3/0/8/130814124/bolimagotu_nubalozaza_gezeroda_bopeduvinojigex.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/1/0430/3159/3113/files/fobawiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/rijisujusasetiratudamuxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/asce_7-_10_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/49663442976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/48312798769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/kororiselemonozodizawar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/338934537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/90072060377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0873/5907/files/76774746092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/lowopavapopumokoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6667/8686/files/41369728324.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_off00004402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4402 5340 bytes
SHA-256: b460b3f813a809d6440052e362d7f450a747568d5d199a233a71dbb6e96e179f
font_01_sfnt_off0000560b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x560B 8976 bytes
SHA-256: 7a135c7bd82e342ebd398c9f0967bef08856bb5ec8d72c51279ff18794f002d4

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