Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b69c7a6938b3fc…

MALICIOUS

PDF

34.5 KB Created: 2020-08-25 02:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63e1b826866ee22e536906df38c5235b SHA-1: 318b89b24847c1b26806f64fab812d913834de6f SHA-256: e0b69c7a6938b3fc229724bd76a50e68b2c3d35bf44272f9af9505c10fa664d6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector link farm. The primary malicious URL, https://ttraff.ru/pify?keyword=sinhala+lassana+adara+wadan, is likely used to direct users to further malicious content. The document body is heavily obfuscated, but the presence of this URL and the heuristic firings strongly suggest a phishing or redirection attack. No scripts were extracted from this sample.

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=sinhala+lassana+adara+wadan
    • http://pogugobo.susantregoning.com/uploads/1/3/1/3/131398252/dosufi.pdf
    • http://files.cjhawkins.net/uploads/1/3/2/7/132740182/fomapamulasoka.pdf
    • http://files.governmentgrants.net/uploads/1/3/1/1/131163492/d3010d7.pdf
    • http://files.satphones.com/uploads/1/3/1/6/131637658/6932170.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.pdf
    • https://cdn.shopify.com/s/files/1/0433/4511/7342/files/whatsapp_video_app.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/toxilimawubisanopige.pdf
    • https://cdn.shopify.com/s/files/1/0439/3834/9211/files/reactive_training_systems.pdf
    • https://cdn.shopify.com/s/files/1/0438/9987/9576/files/skyway_fishing_pier_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/angular_4_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0432/1420/9186/files/acer_al_2216_w.pdf
    • https://cdn.shopify.com/s/files/1/0432/7827/0619/files/apple_music_to_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/3669/6999/files/40900388102.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_off00004beb.bin
4f1aac52bc7dfd012a919948d82e4c83d5229ef2ff3d0ab6c6eb98a0acca7f1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEB 5108 bytes
font_01_sfnt_off00005d46.bin
264dd0101853fcec520b815584df0814d367d757410187643b63bd5d6bd50192		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D46 9316 bytes

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