Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab97743ddcdb040…

MALICIOUS

PDF

74.7 KB Created: 2021-03-19 17:13:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b95179722af19db73f3022058c99839 SHA-1: d1113438eca66a47d9e6c0344f679610917a0b77 SHA-256: 8ab97743ddcdb04013de5ed9b13cbd3bd96cf78ec6771218093ce63b59d8d169
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a suspicious domain, identified as a phishing or malware lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=speaking+english+test+pdf
    • http://nopadejitakuf.22web.org/ntse_answer_key_2019_stage_1_rajasthan.pdf
    • http://posalak.22web.org/bidak.pdf
    • http://dexuposi.sportsontheweb.net/xovajuduno.pdf
    • http://gukabibus.mygamesonline.org/45825411142.pdf
    • https://static.s123-cdn-static.com/uploads/4470526/normal_5fc988a6b5ab2.pdf
    • http://qrettalq.online/1308959727657sis.pdf
    • http://dosijaruwiteli.mywebcommunity.org/difiketekamul.pdf
    • https://cdn-cms.f-static.net/uploads/4500430/normal_600f2cef829d4.pdf
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5fd7d596d8156.pdf
    • http://vawurabel.mygamesonline.org/year_2_addition_and_subtraction_word_problems.pdf
    • https://cdn-cms.f-static.net/uploads/4477626/normal_5fd8eab99918e.pdf
    • http://all-system7.club/lobupexifesodararobokosqxc84.pdf
    • http://vosalax.22web.org/xurozolewavovevem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b8096ab9-3e9e-4490-8ef3-7dc481177af8/kiwameze.pdf
    • http://toraxetutat.epizy.com/asus_xonar_dx_audio_device.pdf
    • https://s3.amazonaws.com/fotepopunaj/eliminating_wordiness_exercise_2_answers.pdf
    • https://uploads.strikinglycdn.com/files/ec30594d-92ac-448d-8f4f-6e9d1c6df499/elements_of_script_writing.pdf
    • https://s3.amazonaws.com/vapelurowar/sovazorujerebonot.pdf
    • https://uploads.strikinglycdn.com/files/32d20863-487a-465e-a8c4-f37827cd482c/stihl_fs_55_parts_list.pdf
    • http://rixibedi.onlinewebshop.net/tetisemuvonixan.pdf
    • https://s3.amazonaws.com/fewunadupop/a_thousand_years_piano_accompaniment_sheet_music.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_off0000e58e.bin
e65b3d920ce0d62d476d0592ffd9d1382f8271846fd50c8cf64af3fc29275ec6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE58E 5372 bytes
font_01_sfnt_off0000f7d8.bin
8528d852a3e107df613e756f60558ce57ff66f10116835d66b6de984b735d169
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D8 10972 bytes