Malicious PDF — malware analysis report

Static analysis result for SHA-256 4176f8926eea096a…

MALICIOUS

PDF

39.8 KB Created: 2020-08-25 00:15:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47333de75f9800a4763aab1d1aec6665 SHA-1: 9939b214c359c454d7e998dae69f497be879221e SHA-256: 4176f8926eea096aed50dc054d6d17b9af0dc7fdea3ce5569beb466bf0d9d994
162 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=outlook+mail++for+windows+10'. This URL is designed to lure users by impersonating an email notification. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content. No scripts were extracted from this sample.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=outlook+mail++for+windows+10 In PDF document text
    • http://files.higher-learners.com/uploads/1/3/1/4/131453998/5968528.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/1/0428/9835/8432/files/tobilefoseparavako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/xegofisola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/vofelajutotametos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1016/9759/files/39520614184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/65772182999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3363/files/libram_of_constitution_wow_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0703/9897/files/66323327662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6304/9376/files/39626723619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6677/6991/files/tirupafebefigekejazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/49113653079.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_off00005cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB4 5428 bytes
SHA-256: fad905bae53d23721be76e6358f7f1d6c245580836d8711a35145cd72b5c51a8
font_01_sfnt_off00006f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2A 10492 bytes
SHA-256: 5d15086f9a88af1efeca05aef18d6c2d5480d52e7e8b3403c7f6ae4168be1c42

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