Malicious PDF — malware analysis report

Static analysis result for SHA-256 f37a7affc02e1df5…

MALICIOUS

PDF

41.7 KB Created: 2020-08-21 12:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2827b11001606b4f6cac6cf560709449 SHA-1: ce0a9d6419e07d23cdf1dedade212b29a992e8fc SHA-256: f37a7affc02e1df59c29ea1b7ba91782824c472db243dbb82b070f4a02ccef0c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects through 'ttraff.cc', a known malicious redirector. The document body, though partially corrupted, contains text suggesting it is a 'Wargame airland battle beginner's guide', likely a lure to encourage clicking the malicious link. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a malicious redirector.

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=wargame+airland+battle+beginner%2527+s+guide In PDF document text
    • http://files.sarahkramerharrison.net/uploads/1/3/1/4/131453132/6282998.pdfIn PDF document text
    • http://vulogu.evelyncanne.com/uploads/1/3/1/3/131383791/9752014.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/1/0460/1875/6767/files/music_browser_app_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7400/0798/files/96698246938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/revosodozafilizibavuxepid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8658/3710/files/94861008734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/52071930597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4686/0957/files/pubatadolazaxune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/sequenza_ixb_berio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5549/5833/files/tokomijolujugepajebokeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/apostilas_administrao_pblica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1120/1435/files/kojuveninejinazegosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7279/6325/files/dadegeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5129/3603/files/abrir_formato_cdr_en_mac.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_off00006481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6481 5332 bytes
SHA-256: 2cd55b16f45e9c8af39a1cf6d5a24c63948b6e9389a3aef9912b5fe547115a84
font_01_sfnt_off0000768e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768E 10620 bytes
SHA-256: 5556e274992f818729da9f7d50977f72a3aa8b103aa39fc33f5b83db7d59199a

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