Malicious PDF — malware analysis report

Static analysis result for SHA-256 38284b11cfc977a1…

MALICIOUS

PDF

41.9 KB Created: 2020-08-07 23:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0fd53ea107d5f46fc8490b320f69276 SHA-1: 6b3d938b1c126a4b5d75c4fcdb701049f1fa2f57 SHA-256: 38284b11cfc977a111801727690b256debecf18eb800bf1192e822d3730e2fea
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'ttraff.com' redirector. The document body, though obfuscated, contains a URL that is also present in the heuristics, indicating a likely attempt to lure users to a phishing or malware distribution site. The ML classifier strongly supports the malicious nature of this PDF.

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=acretismo+placentario+ultrasonido+pdf In PDF document text
    • http://files.jordansidfield.com/uploads/1/3/1/6/131607600/6104639.pdfIn PDF document text
    • http://merajenug.sigma.graphics/uploads/1/3/1/0/131070872/xanunel-nojumagefol-kepuvezoju-gotut.pdfIn PDF document text
    • http://files.chaseaviation.com/uploads/1/3/1/6/131606169/lagadubipakuloj-rexojetebiwamid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/56655212121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0700/0219/files/43217979591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/nomerimejibanumujedekawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3968/5799/files/65310647713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74133662670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/pagexoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/40830210404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4964/7270/files/dibiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/89500212444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9987/9576/files/beast_conclave_5e.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5984 5172 bytes
SHA-256: 231cc2edd74a2978dd25d529ee973a33b4a79c78558219c83d17c675774aabe8
font_01_sfnt_off00006af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF4 9908 bytes
SHA-256: 3db3fd8ce169171b29f64c5a68acb57214467691c448ab8d85bcb95411842867
font_02_sfnt_off00008ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CED 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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