Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a431399db239e9…

MALICIOUS

PDF

35.0 KB Created: 2020-08-11 16:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b334fd2623631e39f969ee2e38eed476 SHA-1: 93dd16128ade029312e9828a54d601b83618c6b9 SHA-256: b2a431399db239e9535a3187b09f28e9c6f3d258b420b1a1971e7ae78577e772
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links to external PDFs hosted on Shopify. The primary malicious link is designed to appear as a catalogue, likely as a lure to encourage clicks. The ML classifier also 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/pify?keyword=catalogue+nsx+schneider+pdf In PDF document text
    • http://files.sincerelyalana.org/uploads/1/3/1/6/131636766/zadebogonidavaluk.pdfIn PDF document text
    • http://files.holisticways.com.au/uploads/1/3/0/7/130775506/budotirewet.pdfIn PDF document text
    • http://files.sdusdape.com/uploads/1/3/0/7/130776276/2809571.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/1/0437/9050/0001/files/css_the_definitive_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/sefesijogaverelomokawaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/63508957843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/31067201915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/i_am_jazz_full_episodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/xifok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/katakoxomitelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/togosor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0909/7384/files/zoxisotebifewabujewoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/gawoluzikilorupumuwuguzip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2036/9576/files/53688546468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/73896596612.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 6

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_off00004a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A03 5392 bytes
SHA-256: 9036028019c30a994c875e8577926ddeaf06863b9eae1ac3ccf61fc5fcf2f344
font_01_sfnt_off00005c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5B 9912 bytes
SHA-256: a0d3205ca97c9e708a5133e477d098ab7c15a6c0e64be0476f81a242484f23a7

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