Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf679b0f69eb8a9d…

MALICIOUS

PDF

42.2 KB Created: 2020-07-31 21:01:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 548694f9b29114abcf58a7360f53f38a SHA-1: cbdf8dc1055f048a77c5385f779abe45a4fe42e5 SHA-256: cf679b0f69eb8a9de10b35a1a26ab51d629b830608ece53b74c121e93ae2a160
194 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document also contains a large number of links to other PDFs hosted on Shopify, forming a link farm, likely for SEO manipulation to improve the ranking of the malicious redirector. No scripts were extracted from this sample.

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=arduino+clear+serial+monitor In PDF document text
    • http://files.swedishamericana.org/uploads/1/3/1/3/131379183/ac3a302fbcab59c.pdfIn PDF document text
    • http://files.harmonyorganics.net/uploads/1/3/1/8/131856276/acadee41a.pdfIn PDF document text
    • http://files.hunterandersonrichmond.com/uploads/1/3/2/8/132816036/1027661.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0431/5326/0701/files/856247954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6619/5106/files/21560409522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/worasume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/17797240294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42778981568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9334/3899/files/barufatifenilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7745/1428/files/dalewarozivotigakumib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/9238198408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jewepogepavab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1958/3138/files/joteterexafezurixurafuwun.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE7 1700 bytes
SHA-256: 859494af90ed40dd156f904f5386888518ea552f3f5cd152b81339787acc6d68
font_01_sfnt_off00006616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6616 5072 bytes
SHA-256: bd4d0e296412625a460087852c85adb50c41225e030f262f8600646cb92e00a2
font_02_sfnt_off0000773f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 10772 bytes
SHA-256: 21a21db2820f92294a0ad8acad8459c579fe38b2e8f9d3051f8d1530b9ec8925

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