Malicious PDF — malware analysis report

Static analysis result for SHA-256 760099fa9da43bcd…

MALICIOUS

PDF

50.9 KB Created: 2020-08-13 09:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f6d1480032dc570fc88c31c5c852c91 SHA-1: ba78db11f589c91a801a1f3e9c504504c4393691 SHA-256: 760099fa9da43bcdac863b6d37640ec919335ded4ff296b4364ff221bdf2dc3b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, which in turn leads to other PDF files. This behavior is indicative of a link farm designed to distribute malicious content, likely disguised as educational materials. The ML classifier strongly supports the malicious nature of this PDF.

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=wordly+wise+3000+book+8+lesson+13+answer+key+pdf In PDF document text
    • http://files.clubedouroxtreme.com/uploads/1/3/2/7/132712407/kiwov-solup-lopupiva.pdfIn PDF document text
    • http://files.southtownscatholic.org/uploads/1/3/1/6/131636990/3996155.pdfIn PDF document text
    • http://lelebaru.americanabytheseashore.com/uploads/1/3/0/8/130813528/3578804.pdfIn PDF document text
    • http://files.stlvacancy.com/uploads/1/3/1/8/131856380/6667462.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/1/0433/2358/8773/files/xiwuruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/32688703173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8336/6551/files/bicycle_shop_business_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/kigesedejovemowul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9360/5014/files/jedazamasimivanemugetolop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6487/6453/files/44293937976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9885/6867/files/likavaziniximosukafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8726/files/gapusafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2830/8387/files/most_common_behavioral_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0014/3777/files/notalomamugar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/guwamawutoverumonizugi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D5 6996 bytes
SHA-256: 874901e2cf8bd134072749e0b5e13fe6b2a49503253248ceb4a8036cb6aed39d
font_01_sfnt_off00007fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA1 5996 bytes
SHA-256: 6d4fa76f96277f2eadd897001437a3ad4fffd13653cb2594ad61a4e4772a1786
font_02_sfnt_off0000943d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x943D 12728 bytes
SHA-256: f88fc7cc0cf7886c40b4c76bf9d95a1b790edca7451c1db2702a6ce359d15bcf

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