Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce52401d7a482f9…

MALICIOUS

PDF

37.8 KB Created: 2020-08-29 02:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a9d9612f3d71a22f4bdba1e53de90d4 SHA-1: c817f059a442e8fab161aa63c9bf9f468481fabb SHA-256: 6ce52401d7a482f98ba4eb859e34220bb2070b8682a514ab93f7a1b0b223dd53
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high number of embedded links pointing to various PDF files, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.com), indicating a potential phishing or malware distribution attempt. The presence of a download button lure further supports a malicious workflow.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=futura+condensed+medium+free+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/jadutuduwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3278/0701/files/diferencia_entre_amigdalitis_viral_y_bacteriana.pdf
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/6753262252.pdf
    • https://cdn.shopify.com/s/files/1/0436/3649/0398/files/lessee_information_sheet_bir_excel.pdf
    • https://static.usrfiles.com/ugd/b8c837_b72b27a34f524b0f8a4beff5cfb824de.pdf
    • https://static.usrfiles.com/ugd/b8c837_a054bf630dbb487b9970bd36e6cc5104.pdf
    • https://static.usrfiles.com/ugd/b8c837_55d396c04cf841308242185549265929.pdf
    • https://static.usrfiles.com/ugd/b8c837_df6f6ee8a33d43d88d06016dfe9240d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_165395e032fc4224bbf43cdaffa0df0d.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/9538736644.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7982/files/38808253525.pdf
    • https://cdn.shopify.com/s/files/1/0472/2963/2677/files/batman_arkham_knight_riddler_guide.pdf
    • https://cdn.shopify.com/s/files/1/0468/8727/2605/files/13692496427.pdf
    • https://cdn.shopify.com/s/files/1/0438/0000/2717/files/panuwalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/40277069694.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/49465136415.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/19885111072.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005594.bin
b5c191fb2d7c8d00b302874c1edcbfa8252a6c162e65dc01a2c34ecafd77faf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5594 5212 bytes
font_01_sfnt_off00006747.bin
d85240a57d16e2ee756e2c6bf7b7661cedebf1db064f2cd6064d2e70b7962d9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6747 10220 bytes

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