Malicious PDF — malware analysis report

Static analysis result for SHA-256 abdb2e427215e74f…

MALICIOUS

PDF

44.3 KB Created: 2020-10-08 07:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4df64fb2ed51b2fbbc1a2f3e6c5bfccd SHA-1: 3c8998cefaed2a16b2d10d1bacbaf6127c7076eb SHA-256: abdb2e427215e74ff7ab4e293c0c715dbab17bbe92f7c04ae855363a001607bf
94 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.ru, which is likely used to deliver a secondary payload. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://ttraff.ru/pify?keyword=apk+live+tv+channel In PDF document text
    • https://site-1039426.mozfiles.com/files/1039426/tititewopezotegonutibonak.pdfIn PDF document text
    • https://site-1036756.mozfiles.com/files/1036756/68435235786.pdfIn PDF document text
    • https://site-1043662.mozfiles.com/files/1043662/56659544022.pdfIn PDF document text
    • https://site-1042095.mozfiles.com/files/1042095/dagefikapetidodonixobuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7236c389-17ca-4802-9485-e21f6be4962a/90167449217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eb797c8-e101-4df8-b9c7-da108f6bcde9/muriwapatozugutowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65d9d9f3-337c-4ebf-8de2-ca5289f3ffa2/zumevirijuwaxit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acde4a86-1b5a-4e29-bab2-c707fb970e21/dagaziziza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ce0932-1b45-42d1-9558-91fd2fa9aac6/jimezegir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0604/2023/files/dyson_ball_multi_floor_canister_vacuum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9529/3094/files/23958503484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5394/6782/files/city_of_heroes_tequila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/potonov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6482/7805/files/endgame_play_samuel_beckett.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f71f45c-ff46-4dce-ae80-e63f1b5077b5/12389400651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9901893-34b3-461e-8ffc-37ad717ee314/62437660807.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000724c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 4860 bytes
SHA-256: ff37d5c641f54622b04c3ff32d48c9b2abd79cf33582b4be72c8dd0230eadb9d
font_01_sfnt_off000082dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DD 9728 bytes
SHA-256: ac2a73363c34ae802fc3865dd5c61dd498c420f5740591c3d4b3618e60433c35

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