Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab4de67fa84f6d0f…

MALICIOUS

PDF

66.6 KB Created: 2020-08-18 23:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49401d76c7d0bb588271122556fab4d4 SHA-1: 969d4da81dcfcfba8831ae58410c67f9787b2295 SHA-256: ab4de67fa84f6d0fbf3c4630286cd26d1e03a5e309f22624a4a3bbca66227939
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=terminal+movie+2018+parents+guide', is flagged as a malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of numerous links, including the malicious redirector, strongly suggests an attempt to lure users to malicious infrastructure, likely for SEO manipulation or further exploitation.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=terminal+movie+2018+parents+guide
    • http://files.fujiwarrior.com/uploads/1/3/0/8/130814337/620603.pdf
    • http://files.almackproductions.com/uploads/1/3/1/3/131379329/8861289.pdf
    • http://files.unlockyourchildspotential.com/uploads/1/3/1/4/131437657/xaziweriperuvox.pdf
    • http://files.mariposacelebrations-eventmanagement.com/uploads/1/3/0/8/130873822/nodumikoxum-mozarisizu-gitin-vuxadi.pdf
    • http://files.ridertransformation.com/uploads/1/3/0/7/130775905/4506679.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/free_female_vocal_samples.pdf
    • https://cdn.shopify.com/s/files/1/0440/8170/9206/files/a_level_mathematics_notes.pdf
    • https://cdn.shopify.com/s/files/1/0440/2357/8774/files/favevekimizidibonabopujer.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/juwesajoziribeju.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/65144693170.pdf
    • https://cdn.shopify.com/s/files/1/0437/9354/7424/files/juvewix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/rumijabavujinafujopoxepaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7169/2188/files/android_ui_automation_testing.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_off0000c51e.bin
807b83b16e1fd62771a84996f3459011662f6fd7cbfe173ad5b11a885274fa61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC51E 5808 bytes
font_01_sfnt_off0000d8c9.bin
06f7fcfffbe333b4a1355063fe4c97f09c829947f061c8a08e2dfebf86a2ade1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C9 10952 bytes

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