Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1a1fc61d6d891a…

MALICIOUS

PDF

76.0 KB Created: 2021-04-07 03:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68569e8025a71d86d785174fd0b190fa SHA-1: 69144e4945bfd6ecf7070d54a90aa049f4a0aab9 SHA-256: 0f1a1fc61d6d891a1679c71b2996fce22ad19c4173c7dbd4313d2b7ae524d448
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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://botokaw.ru/wix?keyword=causes+of+world+war+1+dbq+essay
    • http://golixudib.mypressonline.com/powershot_sx510_hs_wifi_manual.pdf
    • http://kipededevidabun.iblogger.org/sociology_old_ncert_books.pdf
    • https://static.s123-cdn-static.com/uploads/4414332/normal_5fd08a89a2fc6.pdf
    • https://static.s123-cdn-static.com/uploads/4444874/normal_5ffe74a24380c.pdf
    • http://xikisavi.scienceontheweb.net/sukejodadesaforizeki.pdf
    • http://sevowina.medianewsonline.com/logitech_create_keyboard_backlight_not_working.pdf
    • https://static.s123-cdn-static.com/uploads/4375885/normal_5ffd4c10116aa.pdf
    • http://xojanefod.mygamesonline.org/wild_animals_information_with_pictures.pdf
    • http://rebibedo.mywebcommunity.org/robijadurote.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2938de2e-11d3-493c-bb2a-e7a96823c1c2/small_engine_repair_course_online_nz.pdf
    • https://uploads.strikinglycdn.com/files/0967b455-eb57-4940-b61c-d0ddc7e3e046/4860140412.pdf
    • https://uploads.strikinglycdn.com/files/bfac6f7a-c0b9-4416-95e5-6192e3153be6/zojakov.pdf
    • https://uploads.strikinglycdn.com/files/68a04cbc-9fe0-4444-b46c-67349061d318/who_plays_in_twilight_breaking_dawn_part_2.pdf
    • https://uploads.strikinglycdn.com/files/d29e8aab-f42a-4d8d-be7e-3a46767b9dd9/sapusawijopu.pdf
    • http://xudedobivi.epizy.com/tewufibomuleraxufu.pdf
    • https://uploads.strikinglycdn.com/files/f62d5b26-3ec3-4d01-844c-ef75c3c5c776/what_are_the_4_marketing_ps.pdf
    • https://uploads.strikinglycdn.com/files/09b1f673-7bdb-47c0-9cd0-08e0c268cdc9/new_ranger_boats_for_sale_near_me.pdf
    • https://uploads.strikinglycdn.com/files/f6cfc29e-adc3-4fac-9c1a-96230ab88d95/tadikakesowiporonol.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_off0000ed01.bin
d55ae8b00ec2676a6f84f9efb9ad38faf789c9ef1870161037135d1450499f97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED01 5320 bytes
font_01_sfnt_off0000ff37.bin
7f14d7ac0d2a5b25eb9c862ba5f90597985069035a20adf9353efcd79a571044		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF37 10548 bytes

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