Malicious PDF — malware analysis report

Static analysis result for SHA-256 75c764aac3d65042…

MALICIOUS

PDF

38.9 KB Created: 2020-08-04 13:35:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 945eabe3a8dffbe63f3ef534515ca3b7 SHA-1: b9aef0e32cf12f5d7aea5875752e1fddfce5d80a SHA-256: 75c764aac3d65042d1696bd8bd2a0ef108a237516e8f54bc326fcbde85a5ffc6
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, with a primary redirector pointing to a malicious URL. The document body, though heavily obfuscated, contains text that appears to be a lure for a bass tab PDF. The ML classifier strongly indicates maliciousness, and the presence of multiple PDF link farm heuristics confirms 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.com/pify?keyword=birdland+bass+tab+pdf In PDF document text
    • http://files.healthpoweredbyyou.com/uploads/1/3/0/7/130776067/butowub.pdfIn PDF document text
    • http://files.autotrickler.com/uploads/1/3/0/7/130776673/miserujemugi.pdfIn PDF document text
    • http://files.jovaunholmes.com/uploads/1/3/0/8/130873973/818c81.pdfIn PDF document text
    • http://files.caribbeanpsyarts.com/uploads/1/3/1/4/131408970/lonefumi.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/1/0434/6321/3209/files/tinine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/remove_duplicates_in_list_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/sarudelur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/centricity_pm_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7086/2998/files/89609404944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7037/4566/files/votudizanuxoxadowijima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47184882359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3821/0205/files/50211299511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1858/3192/files/tanefuveragulerev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0288/7322/files/zewarufugadaxelasemovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/99683799700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/novawoguzagole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/bobcat_610_specs.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_off00005137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5137 5224 bytes
SHA-256: d80e1239427372ac10a55d915adab9319ddbfc0eea383ae78bf64a740ad1e8e1
font_01_sfnt_off00006301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6301 13216 bytes
SHA-256: 8edb8bb0db34970696310df133dcba2d6f33318a8868a18fac5c209a79b3c3ee

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