Malicious PDF — malware analysis report

Static analysis result for SHA-256 c73032102352f0ce…

MALICIOUS

PDF

42.2 KB Created: 2020-08-12 03:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 905e4fc57b496896d72fe2749d76643f SHA-1: 9ebd23effc0886f212a07f1dda4314a33afb4057 SHA-256: c73032102352f0ce761de904f4f44ab170ebbd81b1cbbb0fbb04c83518f0a80c
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=marketing+branding+strategies+pdf`. This URL is likely used to lure users into downloading further malicious content or visiting phishing pages. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the true malicious destination. The document body itself contains garbled text but includes the suspicious URL and several other PDF 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.cc/pify?keyword=marketing+branding+strategies+pdf In PDF document text
    • http://files.morethansoulfood.net/uploads/1/3/2/3/132302973/timuf.pdfIn PDF document text
    • http://files.barakakorea.com/uploads/1/3/1/4/131453555/zulifaz.pdfIn PDF document text
    • http://files.njmco.net/uploads/1/3/1/4/131483305/67ef8af21bbe.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/1/0429/6255/0940/files/zivuvegipibusez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/43053350012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/86416351965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0314/files/tizesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4677/2646/files/jubameta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7725/4814/files/cashew_nut_shell_liquid_manufacturing_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/best_english_learning_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5085/9670/files/learning_generative_adversarial_networks_next_generation_deep_learning_simplified.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1895/9523/files/48830584252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/html_link_to_download_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/71007858658.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_off0000660f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660F 5384 bytes
SHA-256: f1b30dbbb509eac6fc230645d38b42403c0c549392ecd987bf8ab423a40f4add
font_01_sfnt_off00007870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7870 10468 bytes
SHA-256: 6463b35322670dea587d424edfcde1fe4242796b668d995af8a0a2a333ffd1e4

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