Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e0afe6f86c085e…

MALICIOUS

PDF

95.2 KB Created: 2021-03-19 11:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32248b0e35b9a11d04aac270dea87e09 SHA-1: 7d94e5b6a89c4107b9cffa40194e819b414ae1d9 SHA-256: c6e0afe6f86c085e76f76786bbf2de84a0d42e2476c44608521f65a823fe27f0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is disguised as a search result for a book, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://leonvi.ru/wix?keyword=the+allyn+and+bacon+guide+to+writing+6th+edition+pdf
    • http://gefosezidubajoz.scienceontheweb.net/mofuve.pdf
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5fcd5dc67d4e6.pdf
    • https://static.s123-cdn-static.com/uploads/4410013/normal_5fe2bdd586cb5.pdf
    • http://winoxolupuvil.getenjoyment.net/reiki_level_1_attunement_procedure.pdf
    • http://nonoxutiwi.mypressonline.com/pakawozexegifitifufabu.pdf
    • http://sosiwawivijomo.scienceontheweb.net/sundara_kandam_tamil_audio_songs.pdf
    • https://cdn-cms.f-static.net/uploads/4504788/normal_6052fec557953.pdf
    • http://xulixitozaw.22web.org/49186336040.pdf
    • https://static.s123-cdn-static.com/uploads/4472486/normal_5fe1bb9bc8635.pdf
    • https://cdn-cms.f-static.net/uploads/4425492/normal_604f66d8e1466.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://tadidemoribezor.epizy.com/distress_tolerance_dbt.pdf
    • http://wokobudedisete.rf.gd/munson_fluid_mechanics.pdf
    • https://uploads.strikinglycdn.com/files/1720fb63-c619-4d46-b985-05292ac0fcb5/journey_to_the_center_of_the_earth_full_movie_in_hindi_watch_online_free.pdf
    • https://uploads.strikinglycdn.com/files/9953325b-afbb-4f09-be1d-7878784b5ea5/87072737702.pdf
    • http://pemuwosefewe.epizy.com/pernicious_anemia_2020.pdf
    • http://bamasagure.epizy.com/gear_ratio_calculator_excel_spreadsheet.pdf
    • http://femadonalu.epizy.com/zutakipagonin.pdf
    • http://lelofenejoziza.epizy.com/why_is_my_new_dehumidifier_not_collecting_water.pdf
    • https://uploads.strikinglycdn.com/files/216992be-4553-4a97-9a29-657bb9bfcfa7/rotakivuzasitibozedarofus.pdf
    • http://jiwodiw.myartsonline.com/wernicke_s_encephalopathy_treatment.pdf
    • http://tiguvazigavis.epizy.com/comprehension_exercises_for_class_7_with_answers.pdf
    • http://kewetanetoza.atwebpages.com/kaxizixemaxamogivajarolig.pdf
    • https://uploads.strikinglycdn.com/files/fbdc348b-4d11-4b67-910d-2d9985d6277c/samsung_un55ju6700_specs.pdf
    • http://tofilijewok.atwebpages.com/sakubibanidoda.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012787.bin
8e6c6df1131b9e9832c1800404b870706b90909e22165e4bb713a8ac9d8627d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x12787 5560 bytes
font_01_sfnt_off00013a70.bin
bf04ff7ba84329f4dcdc667be98adbba712d9c48f99b5325dd8581fc8880476a
pdf-font-stream PDF embedded font (sfnt) at offset 0x13A70 10776 bytes
font_02_sfnt_off00015ee1.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x15EE1 4324 bytes