Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a8a2aeac108ffb…

MALICIOUS

PDF

77.7 KB Created: 2021-04-26 07:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: dd1e120073ce3e506f6cbd02c8b3cec6 SHA-1: 075201506f841309af6cf832e46fa97e098f9306 SHA-256: 32a8a2aeac108ffb527d63f8dbd7360efd5c5f0cc7ba8ed3d9755777ae7e8fe8
134 Risk Score

Malware Insights

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

The PDF was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external links, with one specifically pointing to a URL that appears to be a redirector for a malicious download. The document body, though heavily obfuscated, suggests a lure related to 'practising the presence of god', likely a pretext to encourage clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/strik?utm_term=how+to+practise+the+presence+of+god PDF link annotation
    • https://cdn.sqhk.co/kedezoge/hh1kji9/introducing_yourself_worksheet_for_grade_1.pdfIn PDF document text
    • http://fajamad.mypressonline.com/fadumonoxel.pdfIn PDF document text
    • http://xalebiru.iblogger.org/cylindrical_roller_bearing_catalog.pdfIn PDF document text
    • https://cdn.sqhk.co/fikubife/hd7WOJv/jorelir.pdfIn PDF document text
    • http://vasazuruxu.iblogger.org/bht_full_form_in_english.pdfIn PDF document text
    • http://bifinisotipa.22web.org/frases_basicas_en_ingles_y_su_pronunciacion.pdfIn PDF document text
    • http://tilosag.mypressonline.com/sobisupomezisumetoribenus.pdfIn PDF document text
    • http://tazibesemelegi.iblogger.org/vodukitel.pdfIn PDF document text
    • https://cdn.sqhk.co/nakotuba/FjjX2SM/gepule.pdfIn PDF document text
    • http://kudikadip.getenjoyment.net/levaj.pdfIn PDF document text
    • http://difexolexakax.22web.org/aanandam_malayalam_movie_torrentz2.pdfIn PDF document text
    • https://cdn.sqhk.co/tisorobew/hg5jdZE/duck_duck_goose_and_larder_kyneton_menu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/353009a7-0ff6-47c4-82d5-df7046a2b34d/jevalis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/616a2a92-8177-4a28-bcde-19cd46603066/is_procreate_pocket_free_on_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03864ac4-0d90-40c6-9d6d-68a1f93a3d96/sumijirizewezos.pdfIn PDF document text
    • http://parapaxesu.rf.gd/fekozevaduxugemani.pdfIn PDF document text
    • http://tulifal.onlinewebshop.net/calinescu_five_faces_of_modernity.pdfIn PDF document text
    • http://tobisijukufoki.epizy.com/avaya_18d_call_forwarding.pdfIn PDF document text
    • http://lenadupubop.rf.gd/bosch_security_cameras_manual.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/how_to_setup_xerox_workcentre_6515_scan_to_email.pdfIn PDF document text
    • http://kulebosux.myartsonline.com/women_of_the_bible.pdfIn PDF document text
    • http://nogafojomor.onlinewebshop.net/55670808710.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9F 5440 bytes
SHA-256: 96bd40895346301f63fc8f1c37f99ff09d279b47ee23632f25e5c1c3264126e7
font_01_sfnt_off00010229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10229 11544 bytes
SHA-256: 700e4818fc9440146116a032655b8861271251bd5cbc999876c94a849f1cd648

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