Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf382e099c18d1b…

MALICIOUS

PDF

44.9 KB Created: 2020-08-10 10:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 596a828308d1bb41db10271b6a3fbc86 SHA-1: 761ca4f1f928b1865c156140346c98a15b0d6de8 SHA-256: fdf382e099c18d1b305ec15a9bbe67673ca508fe35725c068f2f2247af84a40d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external resources, which is indicative of a link farm or redirection tactic. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.cc/pify?keyword=public+administration+notes+for+upsc+optional+pdf. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous shopify.com URLs, while some are benign, contributes to the overall link farm appearance.

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=public+administration+notes+for+upsc+optional+pdf In PDF document text
    • http://files.silvermoonkennels.com/uploads/1/3/1/6/131606133/jilutadazi.pdfIn PDF document text
    • http://files.noodlefactoryjazz.com/uploads/1/3/1/4/131437859/dojokol_dulej_vakuvugi_jupofenavidex.pdfIn PDF document text
    • http://kexedopez.sushitimedexter.com/uploads/1/3/1/4/131453133/7019168.pdfIn PDF document text
    • http://files.mplboutique.com/uploads/1/3/1/4/131409442/ridojamatomukanij.pdfIn PDF document text
    • http://files.rt19produceauction.com/uploads/1/3/1/4/131454304/3943432.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/1/0429/8119/5927/files/44626275715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9648/9632/files/bevuxogibazukerilimadabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/rolobapiwuridenelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/89493652517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6570/4599/files/34346391524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/carbono_quiral_exercicios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0205/2257/files/blackwell_encyclopedia_of_political_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/fefesikasipirokaloluzegix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/gumopaxusaxinolipojizoker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/after_effects_cs6_tutorials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4744/4899/files/80268774495.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 7

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_off00006fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 5444 bytes
SHA-256: a3fcad45797e511b0668b5c18b387aa102c5c373fc140851fe40397466b76453
font_01_sfnt_off00008230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8230 10540 bytes
SHA-256: cc5d3dfb87e73849eca8e9e55f9d210a8d04dea5fcacaec2ef4832712af70acf

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