Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a9ee8bc52501b07…

MALICIOUS

PDF

43.6 KB Created: 2020-08-25 02:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53c7853afb20df9799a74e1e151ad355 SHA-1: 5f034e626c8f95f8ca9435f764fa51d3ea449cbe SHA-256: 4a9ee8bc52501b073ab92dc495f20408d473bd38866ebeffa563312039259d0a
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to potentially malicious redirectors. One such redirector is https://ttraff.cc/pify?keyword=history+channel+salem+witch+trials+answers, which is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external content. The presence of numerous PDF links, including those hosted on shopify.com, indicates a link farm strategy to distribute 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=history+channel+salem+witch+trials+answers In PDF document text
    • http://gabizafix.techniquevaulting.net/uploads/1/3/0/7/130738799/1a5cd.pdfIn PDF document text
    • http://kireb.viviembellish.com/uploads/1/3/0/9/130969483/buxoziritoj-latejapinef.pdfIn PDF document text
    • http://xonenu.triplehhunting.com/uploads/1/3/0/9/130969754/7204285.pdfIn PDF document text
    • http://veroxa.ernst-arch.com/uploads/1/3/0/7/130776132/b881083659.pdfIn PDF document text
    • http://files.dartendistrict.com/uploads/1/3/1/8/131856381/jarukid.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/1/0436/7482/8953/files/nalelew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2893/7880/files/orbit_water_timer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/oculus_quest_adb_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6489/2323/files/24063636745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/lacrosse_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jonamov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5891/1649/files/wodetegekikozorupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9162/3077/files/pomekelivulajajul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8954/3836/files/xikurifugan.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_off00006cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDE 5192 bytes
SHA-256: 57178043b0d013a174651ec682012e0a48d8e28105586276d67bff96705c2c16
font_01_sfnt_off00007e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E69 10312 bytes
SHA-256: ddf49475d86231c790873b48d960226d65a6d5df4a0ab38096bf69005db2e96f

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