Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c9cf9257d71bdc5…

MALICIOUS

PDF

50.0 KB Created: 2020-07-31 07:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12c381ada288e2cd4785ac99317bad78 SHA-1: 9d29bb8ac18d37791850854df34d55b4cc4c0ebd SHA-256: 1c9cf9257d71bdc5b2043b18863e09a748a0ca72d4a95b79c772d15006df8105
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is part of a link farm designed to lure users into clicking on what appears to be a legitimate document. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to a 'fingerprint attendance system project pdf', likely a lure.

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=fingerprint+attendance+system+project+pdf In PDF document text
    • http://files.jacquelinedeangelis.com/uploads/1/3/0/8/130873983/e5eb53b39.pdfIn PDF document text
    • http://files.voilasuespen.com/uploads/1/3/0/8/130873922/93b7d4fe1c.pdfIn PDF document text
    • http://files.synergyhairandbeautyelloughton.co.uk/uploads/1/3/0/7/130738696/gakoxitodivip.pdfIn PDF document text
    • http://files.kwfootography.com/uploads/1/3/1/3/131381640/vitevobanevamijij.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/1/0433/4885/2891/files/5344042591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/90005391204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/99889576353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/38250330040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/34475308464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1790/3008/files/46112575382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71895705060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/jigasowanosejalum.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_off000076b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B8 5364 bytes
SHA-256: 8904f43c91ca1c4e797e69a8c19174f4781a4dc5c98e61983d4915f730d6d1e5
font_01_sfnt_off000088e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E3 15424 bytes
SHA-256: 79e7a5653d795ad45fb75a9d25ad42f248d90c55ff108b7877eb57f5a2103762

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