Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdca2afc78c9df69…

MALICIOUS

PDF

78.9 KB Created: 2021-03-16 07:10:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2a4665bdbd9fa400756b58e331524a49 SHA-1: a370cf8923fafed1c5436fc41c6c29a55c2347a8 SHA-256: bdca2afc78c9df690cbf5aa7e26f3b6398802b990d237e7f4c57b9ae17a1357a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a domain associated with phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to network devices, suggesting a lure to trick users into visiting a malicious site for a fake utility.

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
  • 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.
  • 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://gimoguvi.ru/strik?utm_term=reset+zebra+gk420d+network PDF link annotation
    • https://lexabebuwapo.weebly.com/uploads/1/3/1/3/131383838/roneguvuzovifovilaza.pdfIn PDF document text
    • https://degubazof.weebly.com/uploads/1/3/5/3/135304991/9480162.pdfIn PDF document text
    • http://zaliv2k20wowowowoow.xyz/oconee_state_park_directionsa78lv.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/guledoloxured.pdfIn PDF document text
    • http://kofupum.mygamesonline.org/which_is_the_best_battery_operated_hedge_trimmer.pdfIn PDF document text
    • http://zebiripu.mygamesonline.org/gevakamegojajug.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/ehigihf/infectious_mononucleosis_is_caused_by_what_virus.pdfIn PDF document text
    • https://cdn.sqhk.co/zadoweferoxe/eKiboOP/spinal_cord_compression_surgery.pdfIn PDF document text
    • https://wufujaxuwagax.weebly.com/uploads/1/3/4/4/134400484/kamuxifulepiv_vusijoxew_xibinatutesapik.pdfIn PDF document text
    • https://cdn.sqhk.co/zijigemeworu/jms4fJP/soft_rock_radio_station_in_dallas_tx.pdfIn PDF document text
    • http://poopo.ru/vampire_diaries_damon_actorfyhcc.pdfIn PDF document text
    • https://xizirasifeda.weebly.com/uploads/1/3/4/3/134344010/7109560.pdfIn PDF document text
    • https://dexuruxewiripo.weebly.com/uploads/1/3/2/6/132682754/4396510.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/takurugilij/vmware_workstation_pro_15_linux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3034f7fb-cf33-43ba-a234-28e9c339459a/6393391669.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/23017081639.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/45943363837.pdfIn PDF document text
    • http://tixofimisupabev.onlinewebshop.net/53946171065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da3048c6-71f9-4ded-b8bd-4223b50a8f4f/best_crossfit_exercises_at_home.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/kefititigijesuranudon.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/guiders_aviation_academy_thrissur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b162c6b-0a18-44fa-b3a7-a4d7dbc78501/57547755390.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_off0000f596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF596 5676 bytes
SHA-256: 95fba09e80796406caa9b309ac8676c0aa3f201ac64416e795d633a94f893db7
font_01_sfnt_off0001091b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091B 10848 bytes
SHA-256: 3ff50badf00b665b64be37fdd7be41c7a43f23aa88b9b6c5b63fb17744ef80ce

Open this report in the interactive analyzer, or submit your own file for analysis.