Malicious PDF — malware analysis report

Static analysis result for SHA-256 945da33a61f044c2…

MALICIOUS

PDF

47.6 KB Created: 2020-08-07 20:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e4c69311b838ff23f7ec5f2a8c89797 SHA-1: a82ae3402d23c2a61627b5d71ed91a018d9bcb94 SHA-256: 945da33a61f044c258b0a8d8e0053520cfa69da0c60a0084c6016fa183f45999
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one also leading to a redirector. The document body, though heavily obfuscated, contains the target URL, suggesting a lure for users interested in Tamil e-newspapers.

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=tamil+e+newspaper+pdf In PDF document text
    • http://files.mequhi.com/uploads/1/3/0/8/130814390/nisudaleda-sujebabi-razafudef-pigigutirapal.pdfIn PDF document text
    • http://files.midwalestourismawards.co.uk/uploads/1/3/2/3/132302995/06a6a3d6f5.pdfIn PDF document text
    • http://files.skfinancieel.nl/uploads/1/3/1/4/131453316/8726459.pdfIn PDF document text
    • http://files.edsthroat.com/uploads/1/3/1/8/131856539/38522201883.pdfIn PDF document text
    • http://files.lakestclairwaterfestival.org/uploads/1/3/2/7/132712514/2c0e1d7c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6899/7283/files/letutemivorur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/neworusupapevusoxuzogoxik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0283/4594/files/story_of_my_life_helen_keller_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8335/0687/files/causes_of_indoor_air_pollution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6117/4687/files/paronizezid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/32730463088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5985/5012/files/35942415563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/acidos_organicos_en_alimentos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/perelar.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE9 5228 bytes
SHA-256: a1285a78d8f76169b9591c72a73c54300b53564ada2695a2e9f2a4db39fb993d
font_01_sfnt_off000061a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A8 7616 bytes
SHA-256: 21a16d7b96295d05051a0386cd6c63bae4be52b8b13e843a5baef0442a70f4ad
font_02_sfnt_off00007836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7836 10416 bytes
SHA-256: 574d4587f87cf2a94ffd1c0b7c57e6f21f5b1eae9673abe64c39243d815225c8
font_03_sfnt_off00009c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C18 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e