Malicious PDF — malware analysis report

Static analysis result for SHA-256 a639e6e5e23094ed…

MALICIOUS

PDF

39.6 KB Created: 2020-08-26 07:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9da01c3021940a48d11020b367148703 SHA-1: 2033352f4e30c913a655f6da998fde67a580c824 SHA-256: a639e6e5e23094edae9a9e51b86596870428c337bbee6762242611a04f64ef44
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, includes the same URL, suggesting a deliberate attempt to lead the user to malicious infrastructure. 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=euipo+guidelines+likelihood+of+confu In PDF document text
    • http://titepagiz.noonegoes.com/uploads/1/3/1/6/131636612/xatuzuwuli.pdfIn PDF document text
    • http://wagidop.zls-linc.org/uploads/1/3/2/8/132814930/kokezob-pirujel.pdfIn PDF document text
    • http://wabevi.kellykuykendall.com/uploads/1/3/1/1/131163729/zejijewekuzelowikuli.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/1/0434/1966/4540/files/jasper_report_table_column_group.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/working_time_directive_opt_out_agreement_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/jexevuladesejeguwajikes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4019/2150/files/d_d_5e_half_elf_variants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/mefuluxodurogukodilageked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/lelemixorekalodix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5392/2981/files/tamil_guide_for_10th.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/59566564588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1518/0188/files/19893102684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8696/1045/files/sonodenagopita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4376/6950/files/aadhar_card_form_maharashtra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/kawexezivumoniwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/43528381031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2212/1122/files/70253838038.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_off00005e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E01 5132 bytes
SHA-256: 586fcfadb27a721807457a3c4c7c5c99f22972c69a3e7303908e1636050e2474
font_01_sfnt_off00006f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7D 9864 bytes
SHA-256: 7d2e06d812f2aa4cb4e3f084e543e10730a3a28c6af7cfe08bd1a32ce3764c84

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