Malicious PDF — malware analysis report

Static analysis result for SHA-256 a10076a4b92069e0…

MALICIOUS

PDF

80.6 KB Created: 2021-05-22 04:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 50679d302fd86da2a5c75a5707a8c088 SHA-1: 954d90aa103148aecbd358b7071efcedd2881a63 SHA-256: a10076a4b92069e0e455f932a2a125aadbc65147f7a95811c16b0f61f2b9d97c
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document attempts to trick the user into executing commands, a common technique for downloading and running further malware. The embedded URL 'https://xezojetit.ru/strik?utm_term=how+to+schedule+a+python+script+in+windows' is likely part of this malicious chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/strik?utm_term=how+to+schedule+a+python+script+in+windows PDF link annotation
    • https://bosofivi.weebly.com/uploads/1/3/4/6/134668799/950628.pdfIn PDF document text
    • https://bupigesow.weebly.com/uploads/1/3/4/3/134360728/d52aa.pdfIn PDF document text
    • https://xizexinapak.weebly.com/uploads/1/3/4/3/134359948/sifojebuzesisuk.pdfIn PDF document text
    • https://memetunariva.weebly.com/uploads/1/3/1/4/131454345/situgutu.pdfIn PDF document text
    • https://jononosafopobof.weebly.com/uploads/1/3/4/6/134649788/lizunojas_zefipovinepila.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/922d0052-a784-4d1b-942b-605c209a6c61/what_to_cook_in_my_ninja_air_fryer.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/can_you_put_an_electric_griddle_in_the_dishwasher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca2da134-79c6-4a14-9ee6-38fc3fcb96c8/bokuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12940b9d-ed22-434d-a639-72c483abd45e/hp_officejet_pro_8600_plus_paper_jam_problem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e763ca09-7883-442a-af4c-79a778376d44/tojojovudaweferemaxadin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78e69613-6fd5-43ab-9a27-2b6d08a4e0a3/what_should_my_hcg_be_at_3_weeks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47bd5fbb-2282-4957-9d17-e4aa5d622250/read_ronin_warriors_manga_online.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/ak_47_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ec78fc-2478-4ea5-9b80-bf6bf3014326/what_is_the_price_of_note_4_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d6a2464-ca74-4ac2-acde-c2a091d3c1d9/bafisafegut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbc770f6-9571-4a41-aca6-28bc386d5e4d/bevozexada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4cbc75c-aa28-4dd7-9868-98b865d99f59/pioneer_model_sx-780_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a47a9989-54fd-49db-980a-3be4a16cbb17/the_love_dare_for_parents_list_1-40.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d7dc12-3c73-4d94-a603-f90319c44334/dojudekebiwedopoponibim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/036457ee-6b9f-4aec-8bf7-f621c3f3c92f/69575633340.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B7 5316 bytes
SHA-256: 78b39c264012a4fe44e10c0ad1fe89705cbaba9ba81641a9fe29b7b59abf2815
font_01_sfnt_off0000f8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DB 11092 bytes
SHA-256: 08257924a793ecb0265f9252a8fa2e80e10a7050b633c3ce038d216dd22a30da
font_02_sfnt_off00011f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F13 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15