Malicious PDF — malware analysis report

Static analysis result for SHA-256 10744cd11dfaf918…

MALICIOUS

PDF

81.9 KB Created: 2020-12-24 21:14:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88bb4300f4b8a79befbf6a1697ed983f SHA-1: 1a6999e149d3074389bff8b8058e64746b7714e7 SHA-256: 10744cd11dfaf918a9b66d2769299063c1920ab1fd1b51d80dbc0d338ff20665
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' and the presence of numerous embedded URLs suggest the document is designed to redirect users to external, potentially malicious sites. The document body, though partially corrupted, contains a title related to 'idle pirate tycoon mod apk', which may serve as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/strik?utm_term=idle+pirate+tycoon+mod+apk
    • https://cdn.sqhk.co/xiteduva/ii6hjlD/the_pyramids_of_egypt_ies_edwards.pdf
    • https://cdn.sqhk.co/faresawuf/iiii46u/44233706428.pdf
    • https://cdn.sqhk.co/fojufifef/zihxhd6/ninja_turtles_2014.pdf
    • https://cdn-cms.f-static.net/uploads/4373788/normal_5fbebb4d4ee4b.pdf
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/kurutiv.pdf
    • https://cdn.sqhk.co/wupifufexix/hafy374/xikuvuvetek.pdf
    • https://cdn.sqhk.co/wupifufexix/hhj4jhb/43396938260.pdf
    • https://cdn.sqhk.co/dupeguwova/jXCDhh8/nascar_finish_line_online.pdf
    • https://cdn-cms.f-static.net/uploads/4479718/normal_5fafd5a4b8039.pdf
    • https://cdn.sqhk.co/baponakazu/5dbEieg/frontier_fios_tv_channel_lineup_florida.pdf
    • https://cdn.sqhk.co/doxinotilid/iyZidhj/18781709952.pdf
    • https://cdn.sqhk.co/naritiba/4CJBjhI/rome_total_war_2_units_map.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/021703ee-da9d-4463-8d2e-2dff23ff3dbc/58641920433.pdf
    • https://uploads.strikinglycdn.com/files/446770af-597f-4676-b023-e11791f5cbd6/juwofewisivis.pdf
    • https://uploads.strikinglycdn.com/files/f4b26ad4-dd11-4768-8845-6e385fd3af18/komezuwesov.pdf
    • https://uploads.strikinglycdn.com/files/3e7a1831-8b71-4a8d-bffc-ac4cf64778e2/30740579341.pdf
    • https://uploads.strikinglycdn.com/files/b5561726-f8d5-49cb-88eb-0e20e764d53a/sulupepuvor.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d080.bin
1e535f03bee0c5308cd640bee193d6571a00108d6894cd862e900e6c171de25b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD080 5144 bytes
font_01_sfnt_off0000e1ee.bin
c2fcfc56333eb3e2f3eff9dee9735d7bc4fb428df5459d357b5f9fd2200847db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EE 5628 bytes
font_02_sfnt_off0000f573.bin
cc3280c400dfacb558ee0696bbe8d024818ba27815575a169b0c1568856dc821		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF573 10380 bytes
font_03_sfnt_off00011938.bin
356ad53019ca4bc414b487deb1a043a78c7509cd9dbf3e22aecabd2cd9ca06fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11938 17040 bytes
font_04_sfnt_off0001318d.bin
74be5bc4d46f64e5c506ae1006f7022dc98ebf960e37c7bf417c2027ca73106d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1318D 1736 bytes

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