Malicious PDF — malware analysis report

Static analysis result for SHA-256 cac261cce7abe010…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 16:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39ae1dacf6f8b57cfbc2d94316ddfda8 SHA-1: 67fe4b9b439b88dcf6b4ba900f26289aff1c0714 SHA-256: cac261cce7abe010e6b252500382b9013ae9fa1f126990a33261cd912984d808
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified as a link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL is 'https://ttraff.ru/pify?keyword=cfa+program+curriculum+level+2+pdf', which is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to 'Cfa program curriculum level 2 pdf', suggesting a lure to disguise 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=cfa+program+curriculum+level+2+pdf In PDF document text
    • http://zepapeva.caseyjonestrail.org/uploads/1/3/1/0/131071157/78c7e9ab.pdfIn PDF document text
    • http://files.ekstasisculture.org/uploads/1/3/2/7/132740515/2f6e26fe42041.pdfIn PDF document text
    • http://files.spirituality-conference.org/uploads/1/3/1/4/131408930/3582932.pdfIn PDF document text
    • http://files.retailforchange.org/uploads/1/3/0/7/130739214/1826018.pdfIn PDF document text
    • http://files.yuriokahana.com/uploads/1/3/1/4/131407802/121bb9c4f.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/1/0434/5144/9496/files/84467178343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/pikuwovuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/vibaropufexovopitedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5943/0054/files/xinemorejejojebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajakeveposemilakojataza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/mikaxururenukaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/89427659514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6153/3082/files/28065064952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/c_language_programming.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
🗂 Part of campaign: ekstasisculture.org 3 samples

Related samples 6

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_off000061d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D4 5396 bytes
SHA-256: 527e9b806a5be9889f3efedc6fca4603810a8f3eadd8a6c94a71fca3c2fe3551
font_01_sfnt_off00007424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7424 10260 bytes
SHA-256: a46b7e38c06845861beb60bc4823191b0b17a6d9a09ed05088cc576424170ca6

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