Malicious PDF — malware analysis report

Static analysis result for SHA-256 93fb1c6e88be532d…

MALICIOUS

PDF

75.9 KB Created: 2021-04-02 00:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04ec676f8a68762fa81c4fe1df5a02e6 SHA-1: bce4ba1aa34d68fcb7b7ae9795ffd905ea34a8f6 SHA-256: 93fb1c6e88be532d6266f516c5d72585a9be805893dfc37b5ba4d30de14e340f
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, including a link farm, and an embedded URL that directs to a suspicious domain. The presence of these links suggests an attempt to redirect users to malicious sites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/wix?keyword=virginia+dmv+manual+audio
    • http://zasasalusip.22web.org/depiwazuwutuda.pdf
    • https://cdn-cms.f-static.net/uploads/4372101/normal_605a5f7512098.pdf
    • https://cdn-cms.f-static.net/uploads/4420902/normal_60246ef45b5b6.pdf
    • http://fubegumusevupe.iblogger.org/panosob.pdf
    • http://jitiben.iblogger.org/dolazujulelu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/1894502b-f07f-43bf-adb4-af7aed6b0ab5/peter_barry_beginning_theory_4th_edition_free_download.pdf
    • https://s3.amazonaws.com/nodetuxapabara/happy_birthday_piano_sheet_music_free_printable.pdf
    • http://lenoguxeg.rf.gd/panasonic_kx-tgda20c_canada.pdf
    • https://s3.amazonaws.com/leteraxewe/37911549659.pdf
    • https://s3.amazonaws.com/murudute/42915214834.pdf
    • https://uploads.strikinglycdn.com/files/20eeade7-8adb-4ea9-8e35-5ddf9f514494/el_mundo_de_sofia_audiolibro_descargar.pdf
    • https://s3.amazonaws.com/kavalukato/bear_app_templates.pdf
    • https://uploads.strikinglycdn.com/files/b54a163d-83bd-4878-89b8-29c3b597fa89/80368765093.pdf
    • https://s3.amazonaws.com/juzowilipi/why_did_the_estates_general_meet_in_1789.pdf
    • https://uploads.strikinglycdn.com/files/4790e363-e9e5-4103-be87-3192c525633d/honeywell_germ_free_cool_mist_humidifier_manual.pdf
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_09ad6eda05b04b0b9c4fde9c836a10f1.pdf?index=true
    • https://s3.amazonaws.com/boxujetanonikuv/d_and_d_market_florence_al.pdf
    • https://s3.amazonaws.com/fazujo/59833363057.pdf
    • https://e114ad41-1367-46fe-a5fd-427bf640f69d.filesusr.com/ugd/a63c55_1c9ef4b13f53455ab606677b628ff553.pdf?index=true
    • https://uploads.strikinglycdn.com/files/aac12514-2e7d-48fa-a3dd-0112cbc54013/dremel_multipro_variable_speed_model_395_type_5_manual.pdf
    • https://f50ece36-1901-4a7b-9396-968a400df7f4.filesusr.com/ugd/3ecb95_06e66c9051914c629175fcafa0ec7d20.pdf?index=true
    • http://vopepogam.rf.gd/august_rush_rhapsody_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dff4.bin
24bdc7911651a4d3da28b888a86a7b31188dd2fcbe390906e079168e67b45257		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF4 4676 bytes
font_01_sfnt_off0000efab.bin
d66c85aada60ceccbd24357830342f83425ae541d627edacd217b53895674bfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAB 10772 bytes
font_02_sfnt_off0001144e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1144E 4324 bytes

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