Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a77219452fda39e…

MALICIOUS

PDF

50.4 KB Created: 2020-08-18 19:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b89e0b7399bdd3bf3931c146901517e SHA-1: b97bffdd4015fc1e406b68cf642dc77f5bed7d4e SHA-256: 9a77219452fda39e5432698d78dd253fdc3de1e2bfc2bc649310728c4ac90378
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, with one identified as a malicious redirector pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Californication season 7 subtitles', suggesting a lure to trick users into clicking the malicious link. The presence of multiple external PDF links also indicates a link farm strategy, potentially for SEO manipulation or to distribute further malicious content.

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=californication+season+7+subtitles In PDF document text
    • http://files.cascadiawindensemble.org/uploads/1/3/1/6/131606694/4696cd49923.pdfIn PDF document text
    • http://files.houseoflady.com/uploads/1/3/1/4/131453494/2182004.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/1/0430/7543/6698/files/edubundu_lenny_sources.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/73665828325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0960/5791/files/combination_resume_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2742/9533/files/scepticisme_philosophie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/40412657139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/mp4_video_samples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8439/9270/files/55526290997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/33321536468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5797/8273/files/92694622567.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 1

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_off00008963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8963 5000 bytes
SHA-256: 7bf08aa023fc415c6d4557e0f3d56b2a64453c4a60e707215c53116e7c9aac05
font_01_sfnt_off00009a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A76 10024 bytes
SHA-256: b4fdaf81c8d030a09ff72d75f570c57f619748f09c624b609a42aeb8acbdfb8f

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