Malicious PDF — malware analysis report

Static analysis result for SHA-256 e024c0fd557940e7…

MALICIOUS

PDF

41.5 KB Created: 2020-08-21 17:07:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1311d32e808fdd722e83072f055d8356 SHA-1: 2409abac4f6bab484ae28c79bd3535ca234f94bd SHA-256: e024c0fd557940e70f0b312c5f1730bd834f8021ebee9fea586fb319fca309fe
128 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for a 'VPN app for android box'. This link redirects to 'ttraff.com', a known malicious redirector. The document also exhibits characteristics of a link farm, with numerous embedded links, many pointing to benign Shopify URLs but some to unknown hosts. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Heuristics 4

  • 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
  • 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=vpn+app+for+android+box
    • http://files.born2go.net/uploads/1/3/0/9/130969776/supep.pdf
    • http://nutufadaf.timelessvoicesohio.com/uploads/1/3/1/4/131408024/pipojazunizer.pdf
    • http://files.ccpspasadena.org/uploads/1/3/0/7/130776682/8c1ac0cee83aaa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6432/6309/files/ketogene_dit_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/7060/3932/files/tusibekinob.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/reliability_and_validity_in_research_methodology.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/performance_self_evaluation_comments_sample.pdf
    • https://cdn.shopify.com/s/files/1/0447/9392/1685/files/waec_core_mathematics_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/jidijanu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/statistics_probability_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/2259990851.pdf
    • https://cdn.shopify.com/s/files/1/0431/9304/1053/files/53266414835.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006576.bin
9ee3f4760fceb6b1e96edbbea63a4c40208906a02e3303ac4f4ae136be2e82bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 4996 bytes
font_01_sfnt_off00007681.bin
dfda178ea2eb9ae1c8e4c4dd06a22bf8f95a851b02bde9a2eb8a8e1bf46d2ace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7681 10152 bytes

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