Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe0b684af0a517c…

MALICIOUS

PDF

87.9 KB Created: 2020-08-18 16:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49828557afb89972a939279301866edd SHA-1: eefbe61743eebd1caa839ec1b05b5b1fe90bb820 SHA-256: 4fe0b684af0a517ce4a01c8d83aadbef14c027c046cd6be96443607d8c2e7456
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=informatica+etl+interview+questions+and+answers'. The document body, though heavily obfuscated, also contains this URL and text related to interview questions, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com, likely to obscure the malicious redirector.

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=informatica+etl+interview+questions+and+answers In PDF document text
    • http://files.smarthvacsupply.com/uploads/1/3/0/7/130739570/4034038.pdfIn PDF document text
    • http://files.shopmerricks.com/uploads/1/3/1/4/131484133/667396bf374b.pdfIn PDF document text
    • http://kojusom.fleetvilleswingband.co.uk/uploads/1/3/1/6/131606457/kobaropabij-rakupatuve-suxogeveb-gononisetib.pdfIn PDF document text
    • http://files.addvocate4coaching.com/uploads/1/3/1/8/131856567/turipulavetumasaza.pdfIn PDF document text
    • http://wetexog.maryscreativespot.com/uploads/1/3/0/7/130738943/7654049.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/1/0429/4865/7318/files/mosasidiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/56499918722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5256/files/80111770841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/bsava_procedures_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/paludeximegelule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/bankers_algorithm_in_deadlock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/mijixosunoreden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0876/0735/files/wiley_statistical_analysis_with_excel_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5176/0281/files/surface_active_ethylene_oxide_adducts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/dell_latitude_e6440_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/givenejisib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8817/4497/files/25621657411.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_off00011871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11871 5380 bytes
SHA-256: 8dbec0e22410dd5b526d38d9225915ed3cbc2db82816f492d3345ef350ddf34c
font_01_sfnt_off00012aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAD 12020 bytes
SHA-256: a56478f94351bd9147bc8020683bf87ba2d41fc4b8ecbdc80b188720475236fa

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