Malicious PDF — malware analysis report

Static analysis result for SHA-256 2513b96ba5c28742…

MALICIOUS

PDF

83.2 KB Created: 2021-03-17 16:53:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06d3e9aaa7ffe41cd1f542868a701339 SHA-1: 38b0eefbf2db08d5e3ef0b958a0168a7f43eb915 SHA-256: 2513b96ba5c287429d2fc216280439bc06e380aaef4c523aa5659716124253c9
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used in SEO link farms to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic suggest the document is part of a campaign to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://xezojetit.ru/wix?keyword=breaking+night+liz+murray+pdf+free+download
    • http://moxilekulina.getenjoyment.net/sesulujanusa.pdf
    • http://topvideo.design/vikukipupadebokinatafoega94.pdf
    • http://fovoxarofej.getenjoyment.net/satezugixerafamav.pdf
    • http://card2card.live/kikojc5816.pdf
    • http://creditscorecard.info/gonoliwi5akvx.pdf
    • http://thedouche.xyz/92825442318z8lyw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/eec493ab-6851-4c82-bf00-947f24683398/3463373394.pdf
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_89dcfbde174a483e9f0da8a7ef798173.pdf?index=true
    • https://d525ee04-2a40-494f-8ba9-fee52f7b18ee.filesusr.com/ugd/8b8e24_5a27eafd80464d328c57c26e950a2a5a.pdf?index=true
    • https://6cda4dd4-8aac-43e7-8003-7c0eea9f7907.filesusr.com/ugd/34e26e_118739dd594a4b75ae02f8e0fdd2d624.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c3ab0f15-9dd5-4488-80b6-5d36a5afd0ca/amazon_prime_video_cloudy_with_achance_of_meatballs_2.pdf
    • https://uploads.strikinglycdn.com/files/fde4f045-20b6-4d23-a45a-975b1ac0bca3/how_to_volunteer_for_red_cross_kenya.pdf
    • https://uploads.strikinglycdn.com/files/c3ecaa48-7504-4031-981f-88841261ee64/the_odyssey_worksheet_part_2_answer_key.pdf
    • https://8d684a1e-4078-49cd-b336-05adf09473b6.filesusr.com/ugd/2b25e8_7772d331697340609777519f665a7d49.pdf?index=true
    • https://uploads.strikinglycdn.com/files/04729844-dcff-44df-ab85-7e2a851b80bf/what_are_the_different_drawing_tools.pdf
    • https://3ae4d138-4ba3-4962-98fb-1b98b40a6a82.filesusr.com/ugd/38062a_16074090a49b490cbf9fa4fe065c9609.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2a6cffad-d061-4687-bbf4-56a72a5d9c38/68384922164.pdf
    • https://uploads.strikinglycdn.com/files/0f55f5e5-b0c0-4720-afa5-2bfea29dbfab/addie_training_model_what_is_it_and_how_can_you_use_it.pdf
    • https://uploads.strikinglycdn.com/files/48c8c39c-92d4-44d0-a229-d4f6b7a04f77/rodexova.pdf
    • https://uploads.strikinglycdn.com/files/c77bff90-1807-480e-81f1-cc4db98af6f1/23761347402.pdf
    • https://uploads.strikinglycdn.com/files/47aca57c-3734-4912-bc2e-be49fd8672a3/35517167265.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee70.bin
e2f529ba37e90708861c67f1ee0c7e9ca763b6a1e8cb31ea3a068204a44f20d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE70 5632 bytes
font_01_sfnt_off00010196.bin
655df8b4814616c77708977c23614589abbc82d033c34b5b20525b886079522d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10196 11168 bytes
font_02_sfnt_off0001280b.bin
cacce353daa52449aaa2dc03ff14e12d7f37b8e2e541d6bae97b449db5f5a003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1280B 16248 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.