Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f7abdc88dce4600…

MALICIOUS

PDF

99.9 KB Created: 2021-03-19 09:07:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 4a8f5068df00e9f44c3b7530f69c9072 SHA-1: b909d6733fb065ac2f20ba52521d26aaece6afe7 SHA-256: 1f7abdc88dce46003980413a6ef0f18fc9943c23ce3b9ca87a7586a3d66955ab
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to disposable domains, a common tactic for phishing or malware distribution. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests a business-email-compromise pattern, aiming to trick users into believing there are new banking instructions. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate it's designed to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://vilenefex.ru/123?utm_term=eurocontrol+authorisation+letter+template PDF link annotation
    • http://moscow-siberian-force.online/how_do_i_reset_my_hotpoint_ovenkixfu.pdfIn PDF document text
    • http://blu-ital.space/robawixojeldexqx.pdfIn PDF document text
    • http://bonmarket.site/71131117571xh7wj.pdfIn PDF document text
    • http://bixazagurimu.iblogger.org/nuziwalezutun.pdfIn PDF document text
    • https://boxijapemisavar.weebly.com/uploads/1/3/0/8/130874030/f3b57ab07.pdfIn PDF document text
    • http://cooldomen.space/nuzinefuromonisibumix5x5o.pdfIn PDF document text
    • http://nikaold.site/revedifarexezektov.pdfIn PDF document text
    • https://labelamujevodit.weebly.com/uploads/1/3/1/6/131606697/vapavuwujo-vejerosuburizi-wadonanep-guvegevosekuw.pdfIn PDF document text
    • https://vixikubinimagap.weebly.com/uploads/1/3/3/9/133997110/2543297.pdfIn PDF document text
    • http://fitdieta.com/dungeons_and_dragons_monster_daily_themed_crossword7u2w7.pdfIn PDF document text
    • https://romizipomubem.weebly.com/uploads/1/3/0/7/130775952/lizopixexazuvupujavo.pdfIn PDF document text
    • http://azakalaza3.xyz/69310946742by1br.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3bdad275-8828-414d-9063-9532e035d791.filesusr.com/ugd/c67d0c_83bc1e913f6b4ad1b603847f897f91ae.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wavunot/27651381143.pdfIn PDF document text
    • http://boripodadup.epizy.com/vampire_diaries_cast_trivia.pdfIn PDF document text
    • http://dorurefu.epizy.com/alfred_hitchcock_presents_season_6_episode_guide.pdfIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_87698245100b45e48a521253562e3a12.pdf?index=trueIn PDF document text
    • http://jujeludapivibiw.rf.gd/60075154861.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/bandit_queen_movie_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/91966080587.pdfIn PDF document text
    • http://duwagisu.epizy.com/13217739824.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_off0001476a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1476A 5132 bytes
SHA-256: fe79610542f02da16ec5545b17ec0256af96e8534eeea340b2356d80010458e7
font_01_sfnt_off000158b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158B4 11864 bytes
SHA-256: 5667b465ca8c35d4c2bfa52e02d7487ef55ef2ac7c21e148f7d3e267484a26b4

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