Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b8c10b6b56566e0…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 01:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 42601271f1ebf9217954cdfa71c0c857 SHA-1: 63c183e7b0ca4f1cc7f051e08ee7447401d34c74 SHA-256: 6b8c10b6b56566e0d3f1af47f10a349d8bc2b113aa4df0ede48ccad7f2846946
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially obfuscated, includes the URL 'https://ttraff.cc/pify?keyword=knowledge+matters+management+accounting+answers', which is also flagged as a malicious redirector. This suggests a phishing or scam attempt to redirect users to malicious content, likely disguised as a document download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=knowledge+matters+management+accounting+answers In PDF document text
    • http://files.1800cuttree.net/uploads/1/3/0/9/130969357/lakomeralefev.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/1/0429/1565/9942/files/process_safety_management_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/nazibavas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/62425679879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/40375177305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1672/4386/files/wulut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/15072397137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6050/1407/files/20829439675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/63602015581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4937/7177/files/project_on_adulteration_of_food_for_class_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0524/5597/files/32436422341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0499/1387/files/veposatujizife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/tidegagowuruximikesutumu.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_off00006a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A72 5320 bytes
SHA-256: 4b03af219ec662c5a6c886d08031c37692d96768cd688df2aa96c7f864510f38
font_01_sfnt_off00007c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C80 10644 bytes
SHA-256: 5c4e4aa7f600c01e06c1de2159ccc38e9b7a36a98d8f126159eeec25895958c7

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