Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1ff70b2c0ac8dc…

MALICIOUS

PDF

42.8 KB Created: 2020-08-02 16:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c74d714c8d814ef79ae3991d69f1c07b SHA-1: 6700f5373cd375291a4e7ce735d87ed832798f6e SHA-256: cc1ff70b2c0ac8dc8a951f4ab971c86c81ce1b7d17eef9c80bc45a769d400c15
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary redirector URL being `https://ttraff.ru/pify?keyword=extract+vmdk+from+ova`. This indicates a likely SEO poisoning or phishing campaign aiming to lure users to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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=extract+vmdk+from+ova In PDF document text
    • http://files.eggharboryachtclub.org/uploads/1/3/1/3/131379268/bikagimonobesonozaf.pdfIn PDF document text
    • http://files.buildingbridgeswma.com/uploads/1/3/1/4/131437283/cdaf2.pdfIn PDF document text
    • http://files.mrguidrydramaclass.com/uploads/1/3/1/8/131858540/9180450.pdfIn PDF document text
    • http://files.mrflessa.com/uploads/1/3/1/4/131453022/gopukamokitoxet-mewaxawemejopab-zuwiwazapozi.pdfIn PDF document text
    • http://files.melnieves.com/uploads/1/3/0/7/130775719/1463929.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/1/0435/7586/9599/files/96342702191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/gubaradojafurizazunebugab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/mojozex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/49608903184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/58972641683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3343/6055/files/dovubiliredexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/99234665536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8203/1007/files/nulalasimiborojetalumopep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/83411600900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/wokobuxamemilogazukunixor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/65615035150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3457/files/61628297928.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 8

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_off00006a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A85 5104 bytes
SHA-256: 7f8c5c4fd3368bb4e007ebb2286a53e77e84deac53667bdb160f84a8bd7efef7
font_01_sfnt_off00007be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE0 9944 bytes
SHA-256: bde417da8037df73b2975db3f986a8aee4f53694c3b667f0c9ef12876422b0ee

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