Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d5fbf84868c2ab…

MALICIOUS

PDF

117.9 KB Created: 2020-08-12 03:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09e2655281b2190092274a304248ad94 SHA-1: d257c5f469827c78f8b06c633767bc6fd1405689 SHA-256: a1d5fbf84868c2abadfef7d1cbfcc20159ca13ee2185bb410ff1a8d45cd52f54
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 'ttraff.com'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. 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.com/pify?keyword=icao+annex+10+volume+2+pdf In PDF document text
    • http://files.rachelrosenberg.net/uploads/1/3/1/3/131381614/pigovazoz.pdfIn PDF document text
    • http://files.bluemoonboutiquejoplin.com/uploads/1/3/1/1/131163635/8927850.pdfIn PDF document text
    • http://files.nhstc.com/uploads/1/3/2/3/132302764/lunir-zekimonatok-segepebaneweve.pdfIn PDF document text
    • http://files.artbymichellemartin.com/uploads/1/3/1/3/131398133/98923.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/1/0433/7437/9158/files/49539871504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/57742581373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/80887850150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1486/5575/files/visetojejun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/nusufigilomikikivetuxis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/6005430775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4750/1474/files/89953106932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/rotojupudifezurifabofevaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/16939524730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0839/2353/files/98249499598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/8122507058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6992/files/free_android_app_to_convert_to_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/scert_books.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 3

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_off00019277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19277 5420 bytes
SHA-256: 97c51d92835bbd0d8f9e2e6350c810ceedc68b00d345df9f0d1146bfd395d1a1
font_01_sfnt_off0001a4e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A4E0 10660 bytes
SHA-256: d604a5e92f9bfc7b4e14eb6395209f53be6bee2d28d9423c41dc51f3fe9cd15a

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