Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09cf2bc108ac10c…

MALICIOUS

PDF

31.3 KB Created: 2020-08-19 02:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8033d321fb4de913a94e493a975cb9c0 SHA-1: a33132bc1258a9528c9074b2167d14376c45d9d5 SHA-256: e09cf2bc108ac10c4b781ed9c7b1470c296d670f732cf2fb501627f00afe903e
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=chocolate+cake+photos. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate a link farm or redirection attack.

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.ru/pify?keyword=chocolate+cake+photos In PDF document text
    • http://files.shinyobjectsvintage.com/uploads/1/3/1/6/131637553/38b1a0de.pdfIn PDF document text
    • http://files.writerwadekelly.com/uploads/1/3/0/8/130874529/9574220.pdfIn PDF document text
    • http://files.madelinekloepper.shop/uploads/1/3/0/7/130775866/bufagobopuxot_jusiwo_xidozoboxolifav_nunolafojuxuw.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/1/0434/0622/9662/files/71466389781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/mewogiladatimigigeporidaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/fuwagotudokimaloxefewajax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6501/5446/files/45620640742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/tumilotepilakug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2657/0664/files/pretty_ugly_poem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/bobulavomijasisewim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/34740876423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7509/2132/files/32602039902.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 3

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_off0000403e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x403E 4896 bytes
SHA-256: b3982b085c33554cf1715e766567fd1b5e230119bd4e409d79fec404666f7072
font_01_sfnt_off000050db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50DB 9404 bytes
SHA-256: f7da25003bfadb46298ee6ae4791b405dcccb20dfa0cddc8c453f5c85e557968

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