Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07c0fcc8d8801ff…

MALICIOUS

PDF

50.6 KB Created: 2020-08-09 16:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 832398e6837e77ed4ff1f52a6c4b8e57 SHA-1: c83648ea35dfdb457c6507f8007fa56b50bd67a9 SHA-256: b07c0fcc8d8801ff7edba415b97dc4a2899323033171efffc6b2141cd4b7e648
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a common tactic for SEO poisoning and link farming. One critical heuristic identified a link to a known malicious redirector, https://ttraff.ru/pify?keyword=great+expectations+abridged+version+pdf, which is likely the primary malicious payload delivery mechanism. The document body also contains this URL, further reinforcing its role in the attack.

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.ru/pify?keyword=great+expectations+abridged+version+pdf In PDF document text
    • http://files.cowboyjamboreemagazine.com/uploads/1/3/0/7/130740589/gosogepo.pdfIn PDF document text
    • http://files.b2bsolutionsgroup.net/uploads/1/3/2/6/132682564/zubovinudaxudew-gibosumijix-nuvafosodosa.pdfIn PDF document text
    • http://files.smbwriting.com/uploads/1/3/1/3/131383727/8e270127e563.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/1/0427/7963/9967/files/jilerasuzawisukosonazunip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/17287767499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/timupizeruparirimeseja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/69941128518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/zemovefinijezawarake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1903/2987/files/karabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2296/5160/files/92017992700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8051/5745/files/33069416250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/92975987006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/zosuwefiparelimopagedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/39116290028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/fogalavemadujawer.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 5

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_off00008726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8726 5588 bytes
SHA-256: 60351f3313bf263ac6ed61edaa96943306e7bea56b62668ca19b9384fd77991a
font_01_sfnt_off00009a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3F 10164 bytes
SHA-256: f8ebb81bc382c584d240414d29fd04d59565f842fb290b2d04d76ba9b5bc13cb

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