Malicious PDF — malware analysis report

Static analysis result for SHA-256 5148450c9bc8be56…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 06:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa9cd97bb2d9e349c55f029c7e1982eb SHA-1: a5297afce39d017e105287386b51993f99841951 SHA-256: 5148450c9bc8be56746be326185315a7037bf18625438df73b63dd588273af21
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.com/pify?keyword=arduino+ide+software+information+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into visiting a potentially harmful website. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious intent.

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.com/pify?keyword=arduino+ide+software+information+pdf In PDF document text
    • http://files.olympiaskate.org/uploads/1/3/1/8/131871439/98adc.pdfIn PDF document text
    • http://files.sacredvoicestudios.com/uploads/1/3/1/4/131483154/kidifobes.pdfIn PDF document text
    • http://files.makingcollegemorecommon.com/uploads/1/3/1/1/131163563/foxumawaruku-sebetatadeju-kulipujo-dajifudimam.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/1/0439/2747/0235/files/gaken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/python_set_vs_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5077/8275/files/scratch_game_programming_for_young_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/tumelowanefatufoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/cattell_culture_fair_iii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/crayola_calligraphy_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6872/6171/files/zipiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1152/2209/files/dogezedekije.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 5

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_off0000633f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 5236 bytes
SHA-256: 6b43ca3ce7675cba2473128a601b1c1edf501c21e68a6126ddfde9477e1ce14c
font_01_sfnt_off00007505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7505 9980 bytes
SHA-256: 83ee3b3be950d0d7f1cc25f480b7698ecad959f2281bbada40fca9d7a423ff93

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