Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc6f3498170bdd0…

MALICIOUS

PDF

43.3 KB Created: 2020-08-09 20:24:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11564e13711a17639fc16bb9cc7b05cb SHA-1: 6aa66ad3b20686e4173c13122012f072202d8564 SHA-256: fcc6f3498170bdd0198bdadd8bad6ec7f288fca5d6e8ccc2123511198deb18b2
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on Shopify, designed to create a link farm for SEO purposes. One of these links, 'https://ttraff.cc/pify?keyword=biometria+hematica+procedimiento+pdf', points to a known malicious redirector. The document body is heavily obfuscated but contains references to the malicious URL and other PDF files, suggesting a lure to external malicious content.

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=biometria+hematica+procedimiento+pdf In PDF document text
    • http://files.crystalconnections.co.uk/uploads/1/3/1/8/131871704/zojelosizaluvi_furabifet_kijufuxiroge.pdfIn PDF document text
    • http://files.sjnww.org/uploads/1/3/0/8/130814644/7848327.pdfIn PDF document text
    • http://dowejosa.lagrangebennac.com/uploads/1/3/1/3/131384401/rumijotov_lutom.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/1/0432/5195/7923/files/viforum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6927/files/farototuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6649/8965/files/zowovekenenigoses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/danodovujobibuxejosuvadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0354/3715/files/gunuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/18700457013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/58670646648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/xogofob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/68302748890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.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 6

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_off00006c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C98 5236 bytes
SHA-256: 43feda3a1245ae2c0c59ca7fcf99cd03383507b7cd89b01783f68733d76eec82
font_01_sfnt_off00007e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E38 10044 bytes
SHA-256: f3e4651813fb2dda16d3aa339cea6ab3a5b259de65bdadf3cec7863a0c233d17

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