Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a424f46ca7fdb1…

MALICIOUS

PDF

40.9 KB Created: 2020-08-18 14:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d27d89f5c749f8e2bc264fa72301bd88 SHA-1: 2bf455f7942923ba959470177f37bc478bf163cb SHA-256: 79a424f46ca7fdb1b74add401b27f31b114d6ea28ad51db25888ab395bfdaba1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body and heuristics indicate a lure for a 'free download', specifically mentioning 'Filezilla client pour android', which is likely a phishing pretext. The presence of a malicious redirector suggests an attempt to lead the user to a site hosting malware or further phishing content.

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=filezilla+client+pour+android In PDF document text
    • http://files.bhpfineminiatures.com/uploads/1/3/1/3/131383318/9381747.pdfIn PDF document text
    • http://files.dellxl.org/uploads/1/3/1/3/131379815/0552304.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/1/0436/9547/2794/files/anthem_ayn_rand_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7243/6889/files/resume_format_template_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1900/2279/files/28421878380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9145/2313/files/giluredufepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6537/5908/files/dwarf_fortress_wiki_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8998/4678/files/26645876905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4080/6811/files/apprendre_a_lire_l_arabe_facilement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0383/7591/files/12323136284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/52581976404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1179/1253/files/94269656938.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 2

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_off000063ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FF 4892 bytes
SHA-256: 4880f590637cdbb706aae62703bd51de93a34540a82c550d808a805548c8fa3f
font_01_sfnt_off000074ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AD 10032 bytes
SHA-256: e0a6b9236ad477dd68ea930a7d1f296dfd24d0ffd40623c883cb8423dc51a7f3

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