Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f705c387ee0d003…

MALICIOUS

PDF

71.1 KB Created: 2021-03-06 06:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9311c245d299622779bfe5376204ee6c SHA-1: 943eef4e57965720ac60699b88a96e77d4cdf1d8 SHA-256: 5f705c387ee0d0034dbdcc42208d49146debe6884b2578dc5b242877506408db
104 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and a heuristic firing for a download button lure, suggesting it is designed to trick users into downloading content. The ClamAV detection and ML classifier output strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection profile point towards a malicious PDF designed for user deception.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/123?utm_term=divergent+3+allegiant+full+movie+download+in+hindi
    • http://effektzhizni.ru/kenmore_gas_stove_oven_igniter_replacement6226a.pdf
    • https://cdn.sqhk.co/lemijexo/bjcigYa/owari_da_japanese.pdf
    • https://static.s123-cdn-static.com/uploads/4368235/normal_5fc678731643f.pdf
    • http://sweetygirl.club/45374822298uckj1.pdf
    • http://puveputado.sportsontheweb.net/zuvonosib.pdf
    • http://rowowesofazov.medianewsonline.com/51795640934.pdf
    • https://cdn.sqhk.co/fegadosijete/kugiig8/mad_contacts_widget_pro_apk_cracked.pdf
    • https://cdn-cms.f-static.net/uploads/4459170/normal_601eeabde6583.pdf
    • https://cdn.sqhk.co/jekuzedu/QRhcbhi/fold_up_single_bed_with_mattress.pdf
    • http://znohist.site/suvafosexixatoruvewu1ceg4.pdf
    • https://cdn.sqhk.co/noligigibar/6jcjfg2/70728557710.pdf
    • http://simopuvoramawu.mywebcommunity.org/gezepiwazagafuxe.pdf
    • http://xojuxelase.medianewsonline.com/barbie_doll_house_walmart_canada.pdf
    • http://instapodarok365.site/811780442348e0y3.pdf
    • http://porizaritofo.mypressonline.com/jusunejinigul.pdf
    • https://static.s123-cdn-static.com/uploads/4416791/normal_6007d2138650b.pdf
    • https://cdn.sqhk.co/bobavijiwoba/fbL0Dto/26637071667.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://molumazorok.rf.gd/a_series_of_unfortunate_events_book_8_free_download.pdf
    • http://fugewad.rf.gd/icon_game_answers_pack_7.pdf
    • http://gizugutopaf.epizy.com/zuwakososaxego.pdf
    • http://feputuwi.epizy.com/how_to_get_a_publisher_for_my_book.pdf
    • http://lituvatitibew.epizy.com/fitugovulijaxive.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9aa.bin
43d015192bc659978de2c4102bb3f6a08eddc49f496acdd5956c671d642c4bf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AA 5456 bytes
font_01_sfnt_off0000ec32.bin
6619ccfc35a7b9e77d147bf84c778fc968826bd11bffdceab67acf7c33fb0d1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC32 10060 bytes

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