Malicious PDF — malware analysis report

Static analysis result for SHA-256 af9b9648e7e93414…

MALICIOUS

PDF

46.2 KB Created: 2020-08-01 07:37:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 727dbea4130186f71356a141226eff38 SHA-1: 63387e4d94fc34a378768396f880f9f0f33485c6 SHA-256: af9b9648e7e93414848008ebc8bbdcad779119d958f24bd8895d80d5b7b2e242
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a lure for the game 'Escape from Tarkov'. This link points to 'ttraff.ru', which is known for redirecting to malicious sites. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The primary malicious IOC is the redirector URL.

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=escape+from+tarkov In PDF document text
    • http://files.michaeljaigrant.com/uploads/1/3/0/7/130739393/8428098.pdfIn PDF document text
    • http://files.shoppiante.com/uploads/1/3/1/3/131379510/c2c88dc.pdfIn PDF document text
    • http://files.myhomefornow.com/uploads/1/3/2/7/132740277/1907ad.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/1/0429/9672/7962/files/41722267001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/29437718916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7956/3419/files/korenibupowivumufib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0509/1745/files/divodewuzezefujixuver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/52648523108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/fezuzajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2524/4053/files/11939156494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/fulisijuzen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/principles_of_dynamics_greenwood_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/tekipokifatozofuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/wizuxugatavisijup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44219577828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/74614258438.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 7

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_off00007459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7459 5244 bytes
SHA-256: dde0da975ba5f0d928fa30ce460816875d6fd172bedd08a394904cc57b6a7538
font_01_sfnt_off00008635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8635 11620 bytes
SHA-256: 6bcb0b101de3eb8091c137d23a7c36fb97e7a87f18b1e1b79918a87bb0e1c3b1

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