Malicious PDF — malware analysis report

Static analysis result for SHA-256 652099d490ba97ec…

MALICIOUS

PDF

69.4 KB Created: 2020-12-20 19:00:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9418be1d12ec78aa5ecd8bbca3b15dda SHA-1: 9144c5ece581fcef091ba67f24439c63f65aa1fc SHA-256: 652099d490ba97ecb408252cdb9362cbba6c2f3852e9623947720ef8dcfc2bb3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, 'trafficel.ru', which is likely used for phishing or to serve a secondary payload. The document body, though heavily obfuscated, contains keywords related to pianos and pricing, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=young+chang+piano+price PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc79de6aa0dc1643a3271d4/t/5fcccd73cded405bb8d69cfb/1607257460150/what_is_dinghy_towing.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/cherokee_indian_traditions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ef7f0f5-1515-4150-81f6-e953b5f3c55d/toto_toilet_flapper_thu175s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc2086c0-5e94-4e80-954b-923ca156c64e/estelle_devers_branden.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/editable_tooth_fairy_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/arthritis_uk_plantar_fasciitis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d7dc3dfdd95b60d4c91c/t/5fc159492dd96f591821ccf0/1606506826583/xozewatepiruvexepebu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64a715687f52b6ba5cdb4/t/5fc96aaee31f6d5f094829f0/1607035567881/merge_racing_car_mod_apk_1._3._3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5265c660-8f10-4b3f-bd17-5b0137cde890/volume_of_cube_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jevuxozazebazug/miracle_box_2._58_crack_link.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/15741570045.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4e9661e25426e12f0c3d/1606373014999/4793934927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77db64ed-d0f9-4f3b-af57-65ee15f56585/ms_7641_motherboard_drivers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d49071f-a2d1-44ff-8186-356d81bfc65f/microeconomics_is_concerned_with_studying_which_of_the_following.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cacb7d1-fceb-4f89-a932-7ea251a79cf8/dimupizaxejodarogiru.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_off0000d39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39C 4948 bytes
SHA-256: a57a74f5b9768db7ed7e992b19fdb745f43c319f2cc9845040fb5a853fa2ba42
font_01_sfnt_off0000e474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE474 10732 bytes
SHA-256: 1aeff9205652b096c1bab612251634b0b8409c6c49a2b2d60905ceab79b23483

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