Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab9611297389e4c…

MALICIOUS

PDF

36.2 KB Created: 2020-08-13 22:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a76e5dc8f30b1443ccb8d188ee543c4a SHA-1: f67ee05f509c0d0841ec4b8bac522e794f645b6d SHA-256: 9ab9611297389e4c961b2ffcacd86569e0f118fe097d2ac0e4d280339e3416b9
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as sheet music that redirects to a known malicious infrastructure. The PDF also features a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded URLs points towards a delivery mechanism for further payloads.

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=russian+roulette+rihanna+sheet+music In PDF document text
    • http://files.digitalspecialists.org/uploads/1/3/1/6/131607866/gozel_wabobifira.pdfIn PDF document text
    • http://vemadebas.barbaraervin.com/uploads/1/3/0/8/130814328/7056859.pdfIn PDF document text
    • http://subuv.anactortravels.com/uploads/1/3/1/0/131070786/3760229.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/1/0431/3828/5734/files/pezukijofugenag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/leditofim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/zolorofoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/toyota_corolla_2020_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4461/5830/files/70850596676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/50104186948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bofudajix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/42154489281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/woporavanasasoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/nibavid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/81636679686.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_off0000501d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x501D 5044 bytes
SHA-256: 8fbcaf6cfa1f8885fe5f1c5eaa1320eeb85c269aa6dc37c3084f7a98fb3b5c7d
font_01_sfnt_off0000610e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610E 10128 bytes
SHA-256: 5708e7c18fa57f74f588b18ffe0697ba3ecd8dcf05ef2a6d0ccc6dc40c3c9216

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