Malicious PDF — malware analysis report

Static analysis result for SHA-256 565e1c6f89693fa2…

MALICIOUS

PDF

47.0 KB Created: 2020-07-27 16:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35d45db8c357b6f050a530e503ba6669 SHA-1: 6d15e8f5b28bd5a678636d93948dc7453dd64a63 SHA-256: 565e1c6f89693fa219fb3e6f8b1fe7e68c8bde113b4884c6bcd395d3133e4f93
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to contain keywords related to job applications, likely serving as a lure for the malicious links.

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=self+appraisal+answers+examples+for+administrative+assistant In PDF document text
    • http://files.glamourcris.com/uploads/1/3/1/6/131606923/79bcb6b704e022.pdfIn PDF document text
    • http://files.ramiea2uri.com/uploads/1/3/1/3/131379874/22f0f.pdfIn PDF document text
    • http://files.charmcitypetcrematory.com/uploads/1/3/1/6/131607522/wekazogawol.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/1/0428/3881/8982/files/55309046915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8175/1964/files/89782456408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/7523454829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/31030646959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/piperul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/16308548446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/52728225003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/rusom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2925/0719/files/10164403499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/zosunegexesewupukuduzod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/90646771485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/45681762926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/tebilew.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 6

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_off00007a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2F 5296 bytes
SHA-256: 6331a90e81ab9ce964c85179a1b790f2fb9e4f4fb7efc3c71d1a6442efa7863b
font_01_sfnt_off00008c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2B 9952 bytes
SHA-256: e3c6380e524b9326081e95f064bec5c60e9e563b30bb943e4ffb70ef079c9175

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