Malicious PDF — malware analysis report

Static analysis result for SHA-256 9527c8cd022d59cb…

MALICIOUS

PDF

39.7 KB Created: 2020-08-06 17:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7aa6e39e0075de0addb8b943e22c2210 SHA-1: 6340efd017f176bb15e7ef22cff5a434a831955b SHA-256: 9527c8cd022d59cb95ab78ea0e2c9fc60fe600d35c7b04e24d3d5d494556d868
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=blank+august+2020+calendar+pdf'. This URL is likely used to redirect users to a malicious site. The document body also contains this URL and numerous other links to PDFs hosted on Shopify, suggesting a link farm or SEO poisoning attempt to distribute malicious content. 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=blank+august+2020+calendar+pdf In PDF document text
    • http://files.ddraonline.com/uploads/1/3/1/3/131380687/a1eced873bc1.pdfIn PDF document text
    • http://files.veblaw.com/uploads/1/3/2/6/132682829/zeperolixevalotiwava.pdfIn PDF document text
    • http://files.mexicoluminaria.com/uploads/1/3/2/7/132740285/f130c64.pdfIn PDF document text
    • http://files.prairieolive.ca/uploads/1/3/0/7/130776110/c0a64246.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/1/0431/6495/8879/files/fezaboxuvuzazaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8947/files/43388733655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/50338618048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/mujikipobetubivanonowiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2468/4968/files/amalgamation_of_companies_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4069/4684/files/vba_export_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/75587881154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1262/0447/files/75642351599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/50961480750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2679/2098/files/50766377843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6288/6554/files/dijoterawumukenarezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/60286355846.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_off00005b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2B 5712 bytes
SHA-256: 375e972168ff087df3ba6f4bab5b5cff7e2537a5636c6ef0491a2c46610ce975
font_01_sfnt_off00006eb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB7 10512 bytes
SHA-256: 7b375eb6b3b35497ef624b034053672cdcdd86319066d4ee574d7aa450d44345

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