Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ac60f6ffdc634b1…

MALICIOUS

PDF

39.2 KB Created: 2020-08-19 19:40:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a52d2eabe220d278cb9a048575a5c82a SHA-1: 2fa3cc43d6aaa9cd63caaba88211da52acc9c1eb SHA-256: 8ac60f6ffdc634b100c70cd3c48007af0bc90402230a1b1868f1f6b9ef892c85
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=trasformazione+centimetri+cubi+in+litri'. The presence of a link farm and a malicious redirector strongly suggests an attempt to lure users to malicious sites. No scripts were extracted from this sample.

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.ru/pify?keyword=trasformazione+centimetri+cubi+in+litri In PDF document text
    • http://files.lofos-apartments.com/uploads/1/3/1/4/131438036/42f8c9ee5.pdfIn PDF document text
    • http://files.mosston.school.nz/uploads/1/3/1/3/131398174/811681ceaaa4507.pdfIn PDF document text
    • http://files.reneeheissart.com/uploads/1/3/1/6/131637316/fudetipa_juzeku_gubemuxoni_vubazulirotiwod.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/1/0435/9444/9055/files/bilingualism_research_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1335/7211/files/aide_memoire_economie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2994/3704/files/79309947382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7133/1742/files/juvuwiveputililubodaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58863311498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/mcps_2020_20_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/the_guardian_crossword_answers_today.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/neoquest_2_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/reraferalotodunofidisaxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/55345792549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/34509237411.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_off00005b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7B 5164 bytes
SHA-256: 51e9d16ec019554086520b83e33604e27b36875c45e8be1bd02ec5f192defa8f
font_01_sfnt_off00006cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFA 10844 bytes
SHA-256: ede3e8f5190a3b985b0d547641db58268d1648fdd1b873e1430b085dd68b6fe0

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