Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5324be70775228e…

MALICIOUS

PDF

48.2 KB Created: 2020-08-21 21:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd0714aea0195ae58160105e045b6d5a SHA-1: bcbfbff30896c6ac2414427a625bb46f906275c9 SHA-256: f5324be70775228e9e48b2d8c386c7841eca9392f83052ab3e1413525a003068
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=l+blend+words+worksheet'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to benign Shopify domains, likely used to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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=l+blend+words+worksheet In PDF document text
    • http://kaxavu.rewritingourstories.com/uploads/1/3/2/8/132814930/cd54d7d119.pdfIn PDF document text
    • http://kugivivog.ritecookware.com/uploads/1/3/1/4/131453960/f43badd.pdfIn PDF document text
    • http://files.unleashedlure.com/uploads/1/3/1/8/131871786/bbad73.pdfIn PDF document text
    • http://vaxajun.trulymedium.com/uploads/1/3/2/3/132302921/7325384.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/1/0434/7192/9496/files/lovigufodipax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/80060027158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2471/2597/files/78234110332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/net_framework_3._5_offline_xp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/80497088825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/77955728220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0447/2992/files/equivalent_ratios_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vunususojorimit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/73624011238.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C10 4940 bytes
SHA-256: f4e50f07846ae3c80273dbfe481bcdc43176dd648c456947d03d6946a30aa0f6
font_01_sfnt_off00006cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEF 15700 bytes
SHA-256: 590d82f24368ed4a2937c5e37de5913bdd8e7de02184d37b7abf9a05db99c8bf
font_02_sfnt_off00009f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F30 16084 bytes
SHA-256: a3b8ae6cb61a975f1aaa3bdf1d75290c2750726bc6c8d8b6ec62e4e9f5cc9978

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