Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1151c9a532834ad…

MALICIOUS

PDF

56.5 KB Created: 2020-08-15 05:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 466c3cc82402ddd894045d46b6a70474 SHA-1: 2b1d02962ec0d33ec9696af772c391f21bab5a05 SHA-256: c1151c9a532834ad8d994b60cc076443fa3cffed1529ac85bb7fc63ea9ab787b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=basketball+rules+test+answers'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to PDFs hosted on cdn.shopify.com, one of which is 'https://cdn.shopify.com/s/files/1/0437/7791/7085/files/juan_tamariz_mnemonica_download.pdf'. The document body, though heavily obfuscated, contains the malicious URL and a benign-looking title, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=basketball+rules+test+answers In PDF document text
    • http://files.confidentlyready.com/uploads/1/3/1/1/131164009/gusubox.pdfIn PDF document text
    • http://files.sinestesiacorp.com/uploads/1/3/2/6/132681337/jowixadifujijixeva.pdfIn PDF document text
    • http://files.craftsisters.com/uploads/1/3/2/6/132695915/2191836.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/1/0437/7791/7085/files/juan_tamariz_mnemonica_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2592/4249/files/the_sanford_guide_to_antimicrobial_therapy_2020_48th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/lutifobalakifogupijew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6703/files/mejujagunejukajuseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9700/5981/files/fuxomalasisuladob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/95333107906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1699/files/35105605242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/68432152397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8375/0814/files/wubexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/list_of_cities_in_the_usa.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 2

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_off00009327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9327 5024 bytes
SHA-256: 4793fb319ef407870099cfa8377fd9878b922c5a7e156e4d2125c6a55bde40cb
font_01_sfnt_off0000a45b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA45B 15872 bytes
SHA-256: 9128dc1c019578e391a8c81fda4e1f4f5f5202c30102de2b3672add8ee9a6649

Open this report in the interactive analyzer, or submit your own file for analysis.