Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c7a384c326a09e…

MALICIOUS

PDF

107.1 KB Created: 2021-03-18 15:34:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 4963a70a350b95b51f3f28788711ee03 SHA-1: 992004b511566ce21a2b0ca1171574ae2ce0d205 SHA-256: 08c7a384c326a09e4e387ec10814898b93db66d2197873609180489a9c257c9f
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, with one pointing to 'resalured.ru', which is flagged as a disposable link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'Film canyons- 2013', likely to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/123?utm_term=film+canyons-+2013 PDF link annotation
    • https://cdn.sqhk.co/nivatasob/geqhhN2/20742197438.pdfIn PDF document text
    • https://cdn.sqhk.co/wexovezojab/dibigii/2495869738.pdfIn PDF document text
    • http://fenellalucynelle.info/minecraft_parkour_games_free6s4ln.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/hjnxh5r/jirusumosijix.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/gIiieha/dejejiturotuwabaxuzu.pdfIn PDF document text
    • http://geniusenglish.space/968332918954pkgw.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/0ibFjg3/grand_academy_for_future_villains.pdfIn PDF document text
    • http://zoomita.space/how_to_open_samsung_air_conditioner_remote_control9i35d.pdfIn PDF document text
    • http://bipasuvuf.iblogger.org/41356397101.pdfIn PDF document text
    • http://b4shop.icu/unity_3d_rollerball_tutorial3ts8s.pdfIn PDF document text
    • http://ital-girl.space/kayla_itsines_gym_workoutaazcb.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/3baa278e-2775-4f65-ab27-182aa30e745c/the_satanic_rites_of_dracula_1973_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/99288611124.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/richard_clayderman_love_story_music_sheet_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca983b26-d91d-4a9d-abe6-8f3af1886a7a/how_to_build_a_scale_model_cardboard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b6fe33a-57fb-48a2-9965-658504a807b2/what_is_an_approved_garage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ebd177e-9240-46fe-a152-cd88c9351182/3568504161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfaf8868-9776-494e-bf96-98fa97f55d1a/pilavijad.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/dowunuzedowatosimojizawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9f27084-b5b3-414e-9389-1ea9e832ce5a/m-audio_fast_track_usb_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90dbedf4-41f8-49ba-bbe4-1a7ee322cac6/sinebevuxusuvemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33f235e7-a18a-4f67-a7da-d9eb3c95c12c/busobokepinopiwiduzex.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/pexezisezulija.pdfIn PDF document text
    • http://wolaniloko.epizy.com/dependency_injection_interview_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15098ce4-a13a-47ac-ac8f-8c333b8ff176/ap_style_book_citations.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_off00015d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D6D 5428 bytes
SHA-256: 8ce533bfd173f6ad3653fd0af0fe638e4bc215b46869b874ac809599eee67e4c
font_01_sfnt_off00016fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FEA 14940 bytes
SHA-256: 16280ace8fa9b1cbdbc14b1d067eb75a66201c86bf92de6752e8a7d2cfa03f0a