Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3deae8c864e0c2…

MALICIOUS

PDF

40.4 KB Created: 2020-08-01 03:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e959ea972f62ab5e23fdebc5c7b4adf8 SHA-1: 486b4340e003bec1e319afda83dfc6cf3b62f25a SHA-256: 9c3deae8c864e0c2f99dba8da9c959216bcf5ad83bb38d0dfad6013ffa577530
194 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing a malicious redirector link and a link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs, particularly the one pointing to 'ttraff.ru', suggest a redirection to potentially harmful content. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the attack pattern.

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=subnautica+recharge+battery In PDF document text
    • http://files.straitduckguideservice.com/uploads/1/3/0/7/130776257/jolunoz.pdfIn PDF document text
    • http://files.ytia.org/uploads/1/3/2/3/132303337/55281.pdfIn PDF document text
    • http://files.mountclaremontplaygroup.com/uploads/1/3/0/7/130775515/jexajorikuvovob.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/1/0434/3624/5142/files/gamavojilesefabijopas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/53134710632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/sawupajakufapimura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5783/0298/files/49455672112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/tunujesepivuzosoxujoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/27427251007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9086/0437/files/58747970601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/diguropazoxununikev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58863311498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/2412434475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6325/4944/files/54751146203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48880371243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/3414172933.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
🗂 Part of campaign: ouhsdra.org 3 samples

Related samples 2

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_off000060df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DF 5196 bytes
SHA-256: aa5b024509d3c5845ec5422d44b1c3c67f9dbe1053c3bd4df050397c87fffcbe
font_01_sfnt_off0000728c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728C 10004 bytes
SHA-256: 3ed8f39f29636f880e5f3da4d704ba389b8ba0ebb35a5af34d0d6f9796b52201

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