Malicious PDF — malware analysis report

Static analysis result for SHA-256 e550e011fffd2ded…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 00:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 781a4fb9c90b9f5a4e72d67aa0dbaba5 SHA-1: 9f06d92d0c51348d4dda1f533034137c4e94f8b2 SHA-256: e550e011fffd2ded28fea5b201079078195b1ee2ffa451a2ff9cf747fcd6a24d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document was identified as malicious due to its extensive use of external links, forming a link farm. One of these links directs to a known malicious redirector, 'ttraff.cc', which is likely used to obscure the final destination and potentially deliver malware. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

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=slow+rap+beat In PDF document text
    • http://files.maceymania.com/uploads/1/3/1/4/131406222/7877367.pdfIn PDF document text
    • http://files.rockytopvacationhomerentals.com/uploads/1/3/1/8/131856288/6977774.pdfIn PDF document text
    • http://fofoxeved.daikokuramen.com/uploads/1/3/0/7/130775045/2e875.pdfIn PDF document text
    • http://files.healthytritowncoalition.org/uploads/1/3/1/8/131871894/a5617d6d8.pdfIn PDF document text
    • http://files.winsomephotos.com/uploads/1/3/1/8/131856602/nobapoxifedovu.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/1/0436/3033/0016/files/59166378728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/60445209308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/rinedoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6175/5547/files/7601770004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3673/2566/files/former_accountant_general_of_the_federation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7249/5526/files/ideomotor_apraxia_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/tigowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/63323037020.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_off0000620f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620F 4972 bytes
SHA-256: 6e592bda27523dda5a5ea4c6dd87c1ffedfc4ce8769210b81dc5ceeec9881dbf
font_01_sfnt_off0000730f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730F 10464 bytes
SHA-256: c105289b625f517ecb96e1f02abe836a6734cbac77ef64639aec5c5647e29114

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