Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e8fe95575437f9…

MALICIOUS

PDF

41.8 KB Created: 2020-08-19 09:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2419970d29c0d302fcbf3ffd76ca5786 SHA-1: 6a8c6f557fe23dc9a450a4b9f44bcf681e6d3e61 SHA-256: 71e8fe95575437f992af4af98ea43a1991b332523e533ef07389935d1df69dcb
194 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body text and embedded links suggest a lure for downloading an "iso image", which is a common tactic for distributing malware. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead the user to harmful sites.

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=cactiez+iso+image In PDF document text
    • http://files.obxchirothrive.com/uploads/1/3/1/6/131606094/gutedinaxada-fedovobe.pdfIn PDF document text
    • http://mabemo.cimstore.com/uploads/1/3/1/3/131384611/a5425c0b.pdfIn PDF document text
    • http://pifibeluz.tinctureoftimellc.com/uploads/1/3/0/8/130873947/baponise-jemugizo.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/1/0429/9925/1093/files/37770013011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/11280208396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/55207090020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/56994911388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1362/files/88454600362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/84713817812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/sewoneb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/pimajetuper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6067/2165/files/plant_cell_organelles_and_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/90051064147.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 5

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_off000066ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AE 4944 bytes
SHA-256: 24bf15e5ff86939afb0ece1491a2673a2b5826615dcec4068746064bdbff4696
font_01_sfnt_off00007779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7779 10244 bytes
SHA-256: 3afbb6a8e9b1a57c7b27db556234c3394905d7b0c6fde70d29d4242da10bb2b5

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