Malicious PDF — malware analysis report

Static analysis result for SHA-256 06afe4cfca11a606…

MALICIOUS

PDF

41.4 KB Created: 2020-08-13 23:36:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4cadb2588a667718d769d7d32efbde28 SHA-1: 2e09c6760c6ca513b524f6b33980fd2873974be0 SHA-256: 06afe4cfca11a6069bff1e2ba6a705bacfd563abb5ef5d5b23ee5a6a67269f0c
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=chm+file+reader'. This redirector is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Chm file reader'. The presence of numerous external PDF links suggests a link farm or SEO poisoning tactic to attract victims. The ML classifier also strongly indicated maliciousness.

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=chm+file+reader In PDF document text
    • http://files.paqu.org/uploads/1/3/1/8/131871894/vibofukupu_ruzererijolibij.pdfIn PDF document text
    • http://vezizotej.djfndctn.net/uploads/1/3/1/6/131606636/2784566.pdfIn PDF document text
    • http://files.graciesgowns.org/uploads/1/3/0/7/130776490/9a18ec6dc46a4.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/1/0430/2657/9610/files/mawakamutepiwugiwokiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/derifunizivewajalixokodag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/jekod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/xetitijujedanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/how_to_delete_all_likes_on_twitter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/nda_math_syllabus_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakisone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/19655690999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/19940759574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/xekajusidudefonetotiduj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5324/3816/files/binary_to_decimal_converter_with_solution.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_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 4876 bytes
SHA-256: 8f91139d7a8bd4367d76ca2579ec04bfcc00fe5b9b278741d45fbaeb7af56d55
font_01_sfnt_off000075ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AD 10428 bytes
SHA-256: 2b68c33075aa8e7851180726ed14e13f60616c63fabfd5d906250c7b3323cb32

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