Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec17ea90b2063b5…

MALICIOUS

PDF

68.4 KB Created: 2021-04-26 06:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7fb864239a159671c4e743f2b3badf7c SHA-1: 55f526c278e43564d49158099d1bc03a7fffcd1b SHA-256: dec17ea90b2063b5d0dacb3f9d51156f0f1a4ecc0f899c5f828b670c1253bffc
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm on disposable hosting, with a high ML score and ClamAV detection as a phishing trojan. The embedded URL points to a domain that is likely malicious and attempts to lure users with a product name. No scripts were extracted, but the overall structure and URL suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xezojetit.ru/strik?utm_term=rascal+600+scooter+charger PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401985/normal_600d843110dd4.pdfIn PDF document text
    • https://cdn.sqhk.co/rutunidosaw/tjejcgh/75972964556.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/chjicij/bebe_cool_new_song_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480904/normal_606b461115ebb.pdfIn PDF document text
    • http://pisodanijuke.iblogger.org/bus_simulator_games_for_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/busoleva/qidiija/galaju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500678/normal_601813cdc6b56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484812/normal_6004bb09d1a6a.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/8ADJjhB/bamboo_flute_lessons_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/vemosoveveb/r2fhe1f/desij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475854/normal_5fff00d00f569.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/2a19cb42-175c-4728-bd34-76017c83d131/motorola_g6_case_walmart.pdfIn PDF document text
    • http://lorasis.epizy.com/formel_areal_sirkel.pdfIn PDF document text
    • http://lojogijenijuf.epizy.com/59811806751.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/2364909336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4578087c-8150-4224-9b6d-962022f0f3a5/84999410396.pdfIn PDF document text
    • http://mawigugu.rf.gd/what_is_reliability_centered_maintenance_rcm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba758c77-f37a-4b33-95c3-9de4e27f627d/orpheus_and_eurydice_myth.pdfIn PDF document text
    • http://refowokewip.rf.gd/sudodod.pdfIn PDF document text
    • http://gogewarixisude.epizy.com/degradacion_de_proteinas_bioquimica.pdfIn PDF document text
    • http://vudagirip.epizy.com/riesgo_de_caries_en_nios.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/53791899003.pdfIn PDF document text
    • http://lujubozugib.epizy.com/digitech_rp1000_multi-effects_guitar_pedal_board.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/52418515350.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_off0000ce23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE23 5364 bytes
SHA-256: 2877775f25e0b8eccedbd4b0e1983a475c7414068f1da41dd6998ff3d952589a
font_01_sfnt_off0000e05a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05A 10996 bytes
SHA-256: 0203ada7e04d334eddacd01cd8d5ac306fb8aef114872978b724c8c63f785872

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