Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4073678ce1877b3…

MALICIOUS

PDF

39.9 KB Created: 2020-08-14 22:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 039a8ce6d729a14b3a480d93426a7dde SHA-1: a5d3e50f7df5921dc1e26bac1629ac31dac3b38d SHA-256: c4073678ce1877b3ddf4a124e4bfffc9c5b2da1b568415da72d352ed90ac27b7
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, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=contemplated+partnership+definition', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Contemplated partnership definition' and the malicious URL, suggesting a lure to trick users into clicking 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=contemplated+partnership+definition In PDF document text
    • http://files.livingatx.com/uploads/1/3/1/0/131071252/04f872a3c.pdfIn PDF document text
    • http://files.schrockhampshires.com/uploads/1/3/2/6/132681336/sikubi.pdfIn PDF document text
    • http://files.ccmooresville.com/uploads/1/3/1/3/131381819/tanupip.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/1/0433/0923/6374/files/rafotevilavebin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/72056847999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/xiwizijuwevedowivurej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/the_adventures_of_tom_sawyer_full_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/xotowuxibopulawelaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/71005235375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0790/9794/files/epidemiologia_clinica_laura_moreno_altamirano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/graduation_announcement_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/61022138671.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_off00005e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E24 5188 bytes
SHA-256: 879c8daf5c8a3d4ff9efe842ed7dd34453321adb67b2a4396c03ccedb1bc098c
font_01_sfnt_off00006f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8E 10376 bytes
SHA-256: df0abceb34cadc7064326fcf0a90b1b0ad5c2e0389232da1876d1aa50155c53b

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