Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5156a7f43c13bf…

MALICIOUS

PDF

45.1 KB Created: 2020-08-22 22:15:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18bc822b683eedd287858daf790fac76 SHA-1: a384dcdf8638e68a1e83cbf07b551d740354154b SHA-256: 1f5156a7f43c13bf0578313895db9e7054d0a1c6d2a4b5efe9882aee223235e7
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=mandated+reporter+translated+in+spanish', which is also flagged as a malicious redirector. The presence of a large PDF link farm further supports the conclusion that this document is designed to redirect users to malicious content or phishing sites.

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=mandated+reporter+translated+in+spanish In PDF document text
    • http://files.emi-ceramics.com/uploads/1/3/2/6/132681066/8337133.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/1/0429/6415/6582/files/87714110789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2382/6085/files/fluoride_in_drinking_water.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/maximus_auto_group.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9635/7530/files/5095260425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/74255701700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/48903686451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/pijugetipasadit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/60810446156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/lomavugisenerukawizag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8270/9160/files/yume_nikki_dream_diary_achievement_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/nutasomik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.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_off000073ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EF 5052 bytes
SHA-256: ead57d51d3eb2f886f3e8f21bee7ee43b4e9c92ee64b0dc6988319d05198cc03
font_01_sfnt_off0000850d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850D 10144 bytes
SHA-256: 467d6c0172925454943495bf891e9e0ac86d2e8f94453286b926a94d9b1fc138

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