Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1243ec4ceb6a6da…

MALICIOUS

PDF

45.8 KB Created: 2020-08-23 15:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c5fc9e11b3493be6d5bdec19e221cc9 SHA-1: 3054b1fa79ff0505e5179bfbd3862bc52c1d2988 SHA-256: c1243ec4ceb6a6da0bc18c0e9c940de29b91e9d3a4aaea2ee75a83106cfbaca2
194 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=rental+application+form+reason+for+leaving'. This URL is embedded within the document's body, disguised as a rental application form. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is the most significant IOC.

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=rental+application+form+reason+for+leaving In PDF document text
    • http://pifuris.serenitiesnow.com/uploads/1/3/2/3/132303382/sokoz_pixipadasago_dezizoxelad.pdfIn PDF document text
    • http://files.coinsmakecents.com/uploads/1/3/0/7/130739174/49fa8e.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/1/0428/7594/5126/files/30218835055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/jenogiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/57518697587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/central_science_13th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/bastar_university_ma_time_table_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/94195624387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7418/9480/files/satefajin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/82780406778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/endemic_epidemic_pandemic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/34719607646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2779/9970/files/95222831097.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_off00007476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7476 5404 bytes
SHA-256: 5af3a9a2b8f5f78b2f0526b8fa9e59e3a08b6df917761cd28ceaac8f0c776674
font_01_sfnt_off000086cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CC 10288 bytes
SHA-256: 6c7962d1660944a93cb9b80d2a9372007f4bc620777f11f82681fe61dfb66318

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