Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0fbf8427781812c…

MALICIOUS

PDF

41.8 KB Created: 2020-08-02 21:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d3d29952510f2086e434398036540331 SHA-1: 1065c70e3dd905655d7b4c65ffcbabe04e4f749c SHA-256: d0fbf8427781812caf43bbf1857dab2de1f73bc2e005634c5ce6e6e261b0b8d1
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users into downloading further malicious content. The document body and embedded links suggest a phishing attempt, impersonating a USPS form to trick users into clicking the malicious link. The ML classifier strongly supports the malicious verdict.

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=usps+form+1583 In PDF document text
    • http://files.simleybasketball.com/uploads/1/3/1/3/131381374/wunarizetesaruk.pdfIn PDF document text
    • http://files.countrytimbergoods.com/uploads/1/3/1/4/131453944/572cff56a7a7e7c.pdfIn PDF document text
    • http://files.theislamicummah.org/uploads/1/3/1/3/131384468/fekeporopubu.pdfIn PDF document text
    • http://files.plumaslafco.org/uploads/1/3/2/7/132740291/jowesivekofilewezas.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/1/0428/9835/8432/files/99237037604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5754/4342/files/ginoram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/12111308999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8440/6181/files/fisher_auction_el_cajon_ca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/kayla_itsines_vegetarian_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/90266690932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/91008456446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/90183028638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7967/0689/files/pafejafefowoti.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 8

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_off0000655a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655A 5328 bytes
SHA-256: cc1569130076aa9fdbeaa0875a921b844c7d056384cedc813fcb1c5421a0637c
font_01_sfnt_off0000777a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777A 10320 bytes
SHA-256: 400999f790ccb9c5a0e7d38e20f1198889efb72f181f48404a0098c691c99bf5

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