Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b5a31f16883095…

MALICIOUS

PDF

69.7 KB Created: 2021-03-14 10:51:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ef263f32e7af56e8be4f97ca8e11cc3e SHA-1: dd9668a71d7a4269d4a727fca332f2a639cf8a95 SHA-256: 68b5a31f16883095462d3d5cbc7dfb1b6af72cc3ab48ea9c9bae9c2f84c36cc7
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The embedded URL points to a domain that appears to be part of a phishing lure, attempting to trick users into visiting it by mimicking a search result for specific parts. No scripts were extracted, but the PDF structure itself facilitated the malicious URL delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/strik?utm_term=coleman+evcon+furnace+parts PDF link annotation
    • http://welivopujaku.iblogger.org/on_writing_well_chapter_10_summary.pdfIn PDF document text
    • http://dirozigumifew.scienceontheweb.net/mewuwufunisomaze.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/jcjiCKU/hackers_soundtrack_vinyl_rsd.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/yhcurjb/dewalt_pressure_washer_surface_cleaner_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/futogifoku/ajggjvP/31945222604.pdfIn PDF document text
    • http://lumufurisazela.mywebcommunity.org/99880686774.pdfIn PDF document text
    • https://cdn.sqhk.co/nobipajami/ggdKBaS/gsmarena_compare_ipad_mini.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/ggfnEgd/drive_ahead_sports_apk_arsivleri.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://panidipelenaju.epizy.com/libiduruzemuba.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/how_many_ways_are_there_to_use_textual_evidence.pdfIn PDF document text
    • http://soromivimurug.epizy.com/77585893095.pdfIn PDF document text
    • http://mutidulofof.epizy.com/mera_bhola_bhandari_full_song.pdfIn PDF document text
    • http://vokenijor.rf.gd/jarupopukigebakobe.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/how_to_use_a_bundt_pan_for_angel_food_cake.pdfIn PDF document text
    • http://jabowedufup.epizy.com/awash_national_park_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/systemic_lupus_erythematosus_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/barclays_app_not_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/gaali_chirugaali_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/instalacion_de_gas_lp_para_autos.pdfIn PDF document text
    • http://rizukapusapanom.rf.gd/calidad_de_vida_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/bts_bangkok_fare_guide.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_off0000d0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A9 5128 bytes
SHA-256: ab2e7c5e8c08f07a00e4d6ee73dc55f56e39dd3afbb3de55067922524f5b1c2b
font_01_sfnt_off0000e205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE205 11616 bytes
SHA-256: db98a0b5ebd4951278ca9964f36c3516fd446fd19fde183ed45c77949bf3ebe4

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