Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e5f26c6abf8da6a…

MALICIOUS

PDF

50.6 KB Created: 2020-08-24 15:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9dcf318844fd546a93102b79c6cb313b SHA-1: 6cf190a3b37419d866eb64cb6b2d8bc83bf77ccb SHA-256: 3e5f26c6abf8da6ab7211efe7ffdc6d32bd504ed5c4f4d65b280db6fbfffee99
194 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=acet+sample+papers+with+answers'. This suggests the document is designed to lure users into clicking the link, likely leading to a phishing page or malware download. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/pify?keyword=acet+sample+papers+with+answers In PDF document text
    • http://files.heritagefairsns.ca/uploads/1/3/1/8/131857419/ef6ebcf7d5d55ae.pdfIn PDF document text
    • http://files.sile765.com/uploads/1/3/1/3/131379789/tuxebis.pdfIn PDF document text
    • http://files.goringgaphistory.org.uk/uploads/1/3/0/7/130775537/8aa2e0cc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/62832306233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4520/3618/files/carbozinc_859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6582/files/all_rounder_naa_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/resistors_capacitors_inductors_diodes_transistors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3622/1341/files/83150032502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/koresidukiparanesudipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7224/9251/files/auxiliary_verbs_grammar.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD6 5252 bytes
SHA-256: cee87cb83259af83faeebe7882a7c2523cdef9bacbcd61604ac2d474df0d6fd5
font_01_sfnt_off00006c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8E 2320 bytes
SHA-256: d97e055e11de589539a249dfdf9c15aca1e9caf4700104d1763a3a5d87d8f7f2
font_02_sfnt_off000076e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E0 10248 bytes
SHA-256: 4a5d763e8c1fdecdf9c91f6f1c8731753067cae620a6520820cee11cc7ef3414
font_03_sfnt_off000099f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99F3 16224 bytes
SHA-256: 207faf14306426b668b87aba0c9d447b8ba40b67f0f7b18660ffa0d3c8132265
font_04_sfnt_off0000af7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF7B 3460 bytes
SHA-256: 398ac91bac7f758a70a93fa293afffacd0836300c82ea0730ceda10d5e08ada6