Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c60e6de77a094f3…

MALICIOUS

PDF

67.2 KB Created: 2021-04-21 22:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d848b1f682cc4c92b4d750ae999eeb05 SHA-1: d6d4d2c44b71ec9c565f215c6f0d0f497ff2c16e SHA-256: 6c60e6de77a094f3adc9088193479ad834227272512014681e5e052e6efc9785
184 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with a high score, and ClamAV detected it as Pdf.Phishing.Trojan. The document body, though heavily corrupted, contains text related to a "Plantronics voyager legend charger case", likely a lure to encourage clicks on the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=plantronics+voyager+legend+charger+case In PDF document text
    • http://7lessons.space/bible_dictionary_apk_offlinev1hck.pdfIn PDF document text
    • http://zonojebiridizo.mywebcommunity.org/42277024128.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/liduvedimajeg.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/audio-technica_at-lp120xusb-bk_direct-drive_turntable_black.pdfIn PDF document text
    • http://rotawafuwuno.scienceontheweb.net/penyakit_anoreksia.pdfIn PDF document text
    • http://xazixovabifin.medianewsonline.com/zuwenobasuwos.pdfIn PDF document text
    • http://golosa-spasibo.ru/cord_cutters_guide_20198xjmu.pdfIn PDF document text
    • http://rowefuzoj.mygamesonline.org/online_resort_reservation_system_thesis_documentation.pdfIn PDF document text
    • http://gavokofubafixi.getenjoyment.net/tidevopemu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://acfcda0b-1795-4b40-aedc-9a0bc13047ce.filesusr.com/ugd/89c6ad_c40bc7a5335e49ac9fa6e36dc1aa2fbf.pdf?index=trueIn PDF document text
    • https://144ece88-722e-4d59-a9d1-ae16887514c2.filesusr.com/ugd/48b17f_0cf10381dbc54f6f83d9ca8912966d7f.pdf?index=trueIn PDF document text
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_8eedfcee8f2e4a24a1a8ec52396a9b1b.pdf?index=trueIn PDF document text
    • http://valupakukav.myartsonline.com/schwing_stetter_batching_plant_cp30_manual.pdfIn PDF document text
    • http://kovemipenege.rf.gd/galokajimuvebelaxotozeden.pdfIn PDF document text
    • http://naburonip.myartsonline.com/88182466709.pdfIn PDF document text
    • http://begulazelukej.rf.gd/ks3_creative_writing_worksheets.pdfIn PDF document text
    • https://7404da97-7fcf-4d5f-9d5f-3f8644e6773a.filesusr.com/ugd/35f767_e7395ff592b347d5bad48534c39b89d2.pdf?index=trueIn PDF document text
    • http://dexadusoxeb.atwebpages.com/4222338904.pdfIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/fisher_price_cradle_swing_aquarium.pdfIn PDF document text
    • http://doxilotosifoku.epizy.com/what_are_the_types_of_biasing.pdfIn PDF document text
    • http://pasemox.rf.gd/hound_of_baskervilles_summary_chapter_2.pdfIn PDF document text
    • http://xavisijividefo.epizy.com/where_did_the_white_house_tree_come_from_this_year.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_off0000c8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C3 5364 bytes
SHA-256: 797a9e1a4b13b39cddaf6ad7793a1e2acf0388b864901aa0af370fc6a3e366ff
font_01_sfnt_off0000db03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB03 10428 bytes
SHA-256: c2e4ea29040798cd0c3ed9c3d55da4d79de3051016aad3fcdad3b5697a28d396