Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da4fb4873eb9fd4…

MALICIOUS

PDF

56.5 KB Created: 2020-08-06 19:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4516b9b936c2191554007bd48643802 SHA-1: b56e6edc6c8b88c45b5947bf087f64e3e9e74cb2 SHA-256: 6da4fb4873eb9fd47c4ea4ee49cb629e0becd44a12362cf73bbff8ee396776ba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The presence of a link to 'ttraff.cc' with a keyword related to security software impersonation strongly indicates a malicious intent to deceive the user. The ML classifier also flagged this PDF with high confidence.

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=symantec+bluecoat+proxy+pdf In PDF document text
    • http://files.theblendedfamilyfoundation.com/uploads/1/3/1/4/131437755/woxufu-liwurezu-fukajunuve.pdfIn PDF document text
    • http://buzipab.birdhousepdx.com/uploads/1/3/1/4/131437987/wolaledebobojulo.pdfIn PDF document text
    • http://files.shopbarsandrec.com/uploads/1/3/2/6/132682063/2378350.pdfIn PDF document text
    • http://files.fatimamontieldesign.com/uploads/1/3/1/0/131070171/xajowabi.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/1/0431/0440/3613/files/xikuzebigeleso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/teperagux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/99116553250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/75363600219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/41997341789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/xilukigifukukulipotujeluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/goruvowivomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5906/9599/files/xugugil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8000/6294/files/56918319419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2782/2749/files/zovegarorixomelezeriba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/5308407949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/towukigudujevapuwaraxujo.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 4

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_off00009ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC0 5536 bytes
SHA-256: 952712fed8c359daf5732e0711d0e519b681de56600e26f5eaf57b76c8507647
font_01_sfnt_off0000b185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB185 10408 bytes
SHA-256: b66a8ba175cce611a59a7233b387ed8cce429ea9d785bcb4d3328639305532c0

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