Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b935ccd0a911d65…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 21:06:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4effc39167d98f8e54c0d2ff89636f9 SHA-1: 0da28aa7e0de365afdec29bfa932e270c9541c22 SHA-256: 7b935ccd0a911d6512e45a661c89f25d899ad9d38e7acfd1ac32b35d9c2f4c0f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'acrylic sheets' and includes the malicious URL, suggesting a lure for phishing or SEO spam. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic.

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=acrylic+sheets+brisbane+australia In PDF document text
    • http://files.burbankbeat.net/uploads/1/3/1/0/131070313/8699330.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/1/0434/5567/6580/files/nuevo_acuerdo_de_paz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/aura_sync_asus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2675/7270/files/76245656105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6290/0374/files/ffxi_official_forums.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/zoleberi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/sowivumixop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0455/1590/files/understanding_the_linux_kernel_bovet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7313/files/android_auto_music_apps_not_showing.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 4

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_off000056a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56A6 5120 bytes
SHA-256: 7a3bfd1e01a3c916093c42721328c14147967c01124f54fd41ffa7c422347ad3
font_01_sfnt_off00006805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6805 14392 bytes
SHA-256: a1fa27738b2d72fc7a939a8584fe33da5b2d51371aa6e952892aa222c8193315

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