Malicious PDF — malware analysis report

Static analysis result for SHA-256 42434d2ab7ac9bec…

MALICIOUS

PDF

137.4 KB Created: 2021-03-30 18:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a029a21f14bc08aa5fc2430a66d984c1 SHA-1: e57fb46ac8286b80e63d29d78bf49bfe2228af5f SHA-256: 42434d2ab7ac9beced640a554251c6470d828ba53b7fb66befab169e250b6eae
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for malicious purposes. The document body, though heavily obfuscated, appears to be a lure related to a service manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=buell+blast+service+manual
    • https://static.s123-cdn-static.com/uploads/4447669/normal_5fce6b3dc35ef.pdf
    • https://cdn-cms.f-static.net/uploads/4382406/normal_6039d93912077.pdf
    • http://kirivil.iblogger.org/5736688511.pdf
    • https://cdn-cms.f-static.net/uploads/4503279/normal_5fd62d1b24b5c.pdf
    • http://gekiwejal.scienceontheweb.net/gofatizejajurexejadub.pdf
    • http://rowomonug.mywebcommunity.org/what_does_taco_bell_mild_sauce_taste_like.pdf
    • http://kebuwakuje.medianewsonline.com/complete_list_of_english_spelling_rules.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://feramivo.rf.gd/best_free_audio_books_site.pdf
    • http://gaxodisesi.rf.gd/star_sports_live_tv_apk.pdf
    • https://uploads.strikinglycdn.com/files/4fe8a972-c426-4817-8d6e-e97b77132a07/brother_intellifax_4100e_toner_and_drum.pdf
    • https://uploads.strikinglycdn.com/files/6f7686ba-d643-4384-a7c2-b7036ee0d880/worapazitujujodokuto.pdf
    • http://noxumalog.onlinewebshop.net/xuzixivujojubelisafesezug.pdf
    • https://s3.amazonaws.com/wegugus/vinayak_damodar_savarkar_information_in_kannada.pdf
    • http://punexowimuseva.epizy.com/72604727901.pdf
    • https://uploads.strikinglycdn.com/files/436c6790-0bc3-4062-b790-6bb362420e82/wojafaxemojava.pdf
    • https://uploads.strikinglycdn.com/files/347a506d-861d-40ad-8452-12761034cb99/how_to_program_a_dish_remote_to_a_panasonic_tv.pdf
    • http://vowojuxibaxo.myartsonline.com/bus_160_nj_transit.pdf
    • https://s3.amazonaws.com/neporezofov/aladdin_2019_english_movie.pdf
    • http://girofili.myartsonline.com/what_is_flock_mean.pdf
    • https://s3.amazonaws.com/dinisemowoge/gisosa.pdf
    • https://s3.amazonaws.com/rawesaragegugar/the_berenstain_bears_books.pdf
    • https://s3.amazonaws.com/roware/ap_psychology_sensation_and_perception_worksheet.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ddbf.bin
5e586e63533a56dde3c79e6dd589bf5eda14330ebf937859ad04e2686c8faa9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1DDBF 5196 bytes
font_01_sfnt_off0001ef5a.bin
8a2b0086c62dec5c53a5bd87db3abd5240a5dd95b23819ac068d451f8cc1fc73
pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF5A 12108 bytes