Malicious PDF — malware analysis report

Static analysis result for SHA-256 5422e6aa74d56fa1…

MALICIOUS

PDF

43.6 KB Created: 2020-08-28 03:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f04bf3644870f9987c41c4afe8a6404 SHA-1: 918d27b547b2839aaf5c96a7c27a4356b8c3fbb7 SHA-256: 5422e6aa74d56fa10bd467991bffa02a9d184f2cae00905a6c260fcadf8850f1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with the primary URL pointing to a known malicious redirector. The heuristic firings indicate that this PDF is part of a link farm, likely intended for SEO manipulation or to distribute malicious content. The document body itself is heavily obfuscated and contains the malicious redirector URL.

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=psicologia+del+desarrollo+moral+kohl In PDF document text
    • http://files.eeborton.com/uploads/1/3/0/8/130874253/kuwedaxifewamo.pdfIn PDF document text
    • http://files.thomasachadwick.com/uploads/1/3/1/6/131606758/xufulif_pilalojeda_tuduwu_jazedebowamoma.pdfIn PDF document text
    • http://ralixazek.irishfestfunrun.com/uploads/1/3/2/6/132681411/1974327.pdfIn PDF document text
    • http://fodexa.perchancetheatre.com/uploads/1/3/1/3/131384600/a803713e2fb1d8.pdfIn PDF document text
    • http://files.allysanimalproject.org/uploads/1/3/0/9/130969551/wixiba-vugepilisug.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/1/0438/7491/0376/files/pigozulafapin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6096/files/finumixewatozefiloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/49693397591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0342/8515/files/leatherworking_leveling_guide_wowhead.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/3937727209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/24120073433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/5794/1402/files/swot_analysis_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/tomalomajunuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/kobowefesexelijamobe.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 8

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_off000069a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A9 5420 bytes
SHA-256: 25d148cba716ac9b70e00ab035492b3f60a33dd45a09d3070ddb72ede056a5d3
font_01_sfnt_off00007be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE2 11028 bytes
SHA-256: a6d6d5196112e976e185237887890bbdb51a07aafc8326035ef9228332428d17

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