Malicious PDF — malware analysis report

Static analysis result for SHA-256 15131c3cd8a1e3d9…

MALICIOUS

PDF

63.9 KB Created: 2020-07-28 19:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebd5969e34cd40364988770fcb884557 SHA-1: 7f13c3880e0631c2e981308d07ba6126f3bc146d SHA-256: 15131c3cd8a1e3d99d2b05cc39c7ef1424158eee5b8d1e689c88b0fc5dcd500e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, pointing to a phishing or SEO scam. The embedded links, particularly to 'ttraff.cc', are flagged as malicious redirectors. While no scripts were extracted, the structure and embedded URLs suggest an attempt to drive traffic to malicious sites, likely for credential harvesting or malware distribution.

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=lagu+you+raise+me+up+lyrics In PDF document text
    • http://files.artivism2019.com/uploads/1/3/1/8/131872238/sasibivos-zosuxuposepo.pdfIn PDF document text
    • http://files.lucasswcd.org/uploads/1/3/2/3/132302859/1a4fbe4433e52.pdfIn PDF document text
    • http://files.northlincsbeekeepers.org.uk/uploads/1/3/2/7/132710787/8653750.pdfIn PDF document text
    • http://files.artemisassessment.ca/uploads/1/3/1/4/131410158/negijugo_jujezavexini_wadud_lelilevokeked.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/1/0428/9835/8432/files/57790570823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/99600134620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6753/0657/files/jasufuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/45436963371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/87845370468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonixalekena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/gevixani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/29409769927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2058/3065/files/14140077249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/38941109283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/63760334843.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9033 3928 bytes
SHA-256: c136d75d6bb8aa06547b0a265e347615c1ce090c317328326cfae5fc6e3d11fe
font_01_sfnt_off00009e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E01 4992 bytes
SHA-256: af384adab8ac87442f73aa9ff6e9a0fd6fd0c54b71767434e2c1c863ec3c6953
font_02_sfnt_off0000af0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF0A 14756 bytes
SHA-256: 11d58b3ac763b2e80ab74f2685d0cda02f5c4a063a738f045e48eabdf3623883
font_03_sfnt_off0000dd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0A 16120 bytes
SHA-256: 184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832