Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b15361f86369e78…

MALICIOUS

PDF

104.4 KB Created: 2020-08-20 19:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6aaac83de3e53d41c93971e7902e534 SHA-1: 9f6c320b2e717c6db09826dc72978aa4bf519074 SHA-256: 7b15361f86369e785b163f16b042caf487d29e4bf15f844093f19c598791967a
194 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to redirector domains and are likely part of an SEO link farm designed to attract victims. The primary redirector URL, https://ttraff.cc/pify?keyword=calvin+and+hobbes+comics+free, is flagged as malicious and likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, contains this same malicious URL, indicating its central role in the attack.

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=calvin+and+hobbes+comics+free In PDF document text
    • http://xolapuw.amylchapman.com/uploads/1/3/1/6/131606592/kunemosigojixu_netorabodufuf.pdfIn PDF document text
    • http://ranusim.romanacoutureshop.com/uploads/1/3/0/7/130775362/pesidaxetukul.pdfIn PDF document text
    • http://xaduk.sheffieldcctvsystems.com/uploads/1/3/0/8/130813821/nibuv_ponalenalidul_pujete.pdfIn PDF document text
    • http://files.laxgear4u.com/uploads/1/3/2/6/132695492/valevoruwoxofome.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/1/0433/3512/3102/files/sizonupaxubasirisuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/sister_location_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/mevejovajomozunamimigurub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/muwemomobegedove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/8783/5815/files/76227142695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/xarili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/59210642714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/eldritch_knight_5e_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2562/8327/files/american_dream_in_death_of_a_salesman_research_paper.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 1

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_off000159f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159F7 5368 bytes
SHA-256: aaedab15be3754457cea668c2b346912aec2d1bf4affaf3e14dc2de1d7b0a1f8
font_01_sfnt_off00016c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C0D 12860 bytes
SHA-256: e51517c1c497a4b479136701b8803c5b48dadfa02670db416946fbb71ec58e84

Open this report in the interactive analyzer, or submit your own file for analysis.