Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae26374da4c07ac…

MALICIOUS

PDF

74.8 KB Created: 2021-03-30 02:48:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cc2ca6596a7797469edb6a10288e093 SHA-1: 7114522bf473d97b1e051217563fd97ebae18844 SHA-256: eae26374da4c07aca1b1c2df1bcbdd6887d83c8f70849a1026fbf9e151bff418
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL disguised within seemingly benign text about crochet patterns, which likely leads to a malicious site. The presence of PDF_URI and EMBEDDED_URL heuristics confirms the attempt to redirect the user to an external resource.

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://zajinet.ru/aws?utm_term=free+baby+crochet+patterns+for+beginners+uk
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5fe8fd02daa6a.pdf
    • http://kushtanash.ru/vegetarian_recipes_for_kids6biyt.pdf
    • https://static.s123-cdn-static.com/uploads/4446645/normal_6006436f69041.pdf
    • https://cdn-cms.f-static.net/uploads/4451227/normal_603c856c36fe1.pdf
    • https://cdn.sqhk.co/xejudawadoni/ZHp4jdO/7016274623.pdf
    • https://cdn.sqhk.co/dugelabomaw/jieVOjd/23759010149.pdf
    • http://xuxodowenam.getenjoyment.net/boxer_workout_routine_and_diet.pdf
    • http://xorabawik.medianewsonline.com/asmaul_husna_malayalam_meaning.pdf
    • http://nemugub.mywebcommunity.org/lisexinu.pdf
    • https://cdn-cms.f-static.net/uploads/4483602/normal_605c180f81fbb.pdf
    • http://brosbass.com/how_many_city_of_bones_movies_are_therew8atm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/39106457-633c-4b16-92cd-0539c988982e/17852261234.pdf
    • https://uploads.strikinglycdn.com/files/e349951a-686e-4ab5-b829-d8a8b53151a1/dell_poweredge_r710_datenblatt.pdf
    • https://uploads.strikinglycdn.com/files/3ad531ad-ebee-438e-a074-18627c72e5cc/xikisosewuvududaxi.pdf
    • https://uploads.strikinglycdn.com/files/d3e11df9-2db8-4d9b-86d9-d74897b9bc3e/the_vampire_diaries_season_8_episode_13_full_episode.pdf
    • https://uploads.strikinglycdn.com/files/cd286093-1a02-4fde-8720-c84351e3ef2b/mcgraw_hill_connect_access_code_ebook.pdf
    • https://uploads.strikinglycdn.com/files/663244bc-fe2d-46fa-8be5-436e2bb9b87b/18237782283.pdf
    • https://uploads.strikinglycdn.com/files/8c5dedcf-5ab3-474c-9117-5a6107d2d01b/gidisepimogu.pdf
    • https://uploads.strikinglycdn.com/files/de64aee2-66ce-48f8-a43b-68ad4a70cb48/sas_survival_handbook_fourth_edition.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_off0000e36c.bin
5c696e119a5926ec74f25b84421d9b1260d4a3250277a2664208d8d5ffc1cd95
pdf-font-stream PDF embedded font (sfnt) at offset 0xE36C 5504 bytes
font_01_sfnt_off0000f62e.bin
3fc94bcb841b5e3d59a7f8980d0b9ddd8ff84c159d4a2312e5b4b65dd0d55c42
pdf-font-stream PDF embedded font (sfnt) at offset 0xF62E 11200 bytes