Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06c65e50be86dc0…

MALICIOUS

PDF

37.9 KB Created: 2020-08-19 01:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea51316f90dbf2c585c7b02a32564e30 SHA-1: 9448a9a4af3f229cc70aae559e9fbc2a8e22665a SHA-256: f06c65e50be86dc01d57f1ce964ba6dccd4060ef565561fe4e09e3045f0e790b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=biostatistics+for+public+health+book+pdf', suggesting a lure to download a book. This link likely leads to further malicious content or phishing pages. The presence of multiple Shopify links, while some are benign, is characteristic of SEO link farm techniques used to obscure malicious intent.

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=biostatistics+for+public+health+book+pdf In PDF document text
    • http://files.hazelrosegibson.com/uploads/1/3/1/6/131606325/lewazosuzepodawud.pdfIn PDF document text
    • http://pitosepu.flatrivermassage.com/uploads/1/3/0/7/130775413/9942446.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3123/9588/files/avm_vs_cavernous_malformation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4633/7693/files/60712865378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/panasonic_wall_fan_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/raguwove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/mefozedazibom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/ginageroguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/tofuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37604868145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5658/5121/files/9017202512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/mekemovurejotogop.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49E2 5272 bytes
SHA-256: a1d62b5c2674f2e3fbc475010a6474a850eb6ec61302ce449b1cbfeb84710af6
font_01_sfnt_off00005bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD3 9660 bytes
SHA-256: db45c010b1f0697844457807ac1f1d43f978584d82fc9961ef08cb228928fbd3
font_02_sfnt_off00007cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDE 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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