Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e57fcf2b5be4bd…

MALICIOUS

PDF

84.9 KB Created: 2021-08-05 03:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7dbf6e9d050686ab80068a57d563e98d SHA-1: 757f4623ed1a212bbb25c364e538ef19082d8a8d SHA-256: d6e57fcf2b5be4bd58e62b64954504034243e05bf767bd18107fb38ad8780b5a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious and exhibits characteristics of a credential harvesting or MFA abuse lure. It contains numerous external links, many hosted on compromised WordPress sites, suggesting an attempt to redirect users to phishing pages. The presence of the 'SE_MFA_LURE' heuristic strongly indicates the document's intent is to trick users into providing sensitive authentication information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://allytemp.ru/uplcv?utm_term=dopo+tablet+hard+reset
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b708971afe---rokibojapezevisabijobo.pdf
    • https://samavetpharm.com/userfiles/files/nosug.pdf
    • https://dacinsara.ro/fckfiles/file/dologokol.pdf
    • http://hieuchuan.com/upload/files/48321951800.pdf
    • http://designpavelzapletal.cz/files/file/77740478367.pdf
    • http://fsoa.cn/userfiles/file/jivigazemozogoderokemok.pdf
    • http://www.tecnobor.com/ckfinder/userfiles/files/bujonikesarepunave.pdf
    • https://heks-tech.com/app/webroot/userfiles/files/xosilesixa.pdf
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1609e07d0e412d---10611768462.pdf
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/f1dd730f54097b884ad3089b6903ceb3/temilozubup.pdf
    • https://istocdukkan.com/userfiles/files/84971264079.pdf
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/6dce99ca426f4e977acfd7d3a50b804b/pirilusiwakafopozutezez.pdf
    • http://au-zlato.sk/upload/files/lejakiged.pdf
    • http://augustaelectricalwork.com/editorData/file/15851311697.pdf
    • https://ruiguoex.com/upfile/files/2021/06/02/97470820168.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/b86a83a58bd97431bbdd4fed817cd50c/2928173192.pdf
    • http://toshiteriyakiburien.com/uploads/files/23294143846.pdf
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607e90b3021ce---82004403844.pdf
    • http://montagnobozzone.it/userfiles/files/ginujonukurew.pdf
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608228e71a940---92139744256.pdf
    • http://ciskmv.com/css/file/19512150315.pdf
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/4886954aca8286ce6a500ff0e2c9475f/dawimulelakojikafa.pdf
    • http://e1pl2.nazwa.pl/busy/fotki/file/vogapuxijikisaforivijado.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e708.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE708 16792 bytes
font_01_sfnt_off0000ff1f.bin
5803ae1e225a41ca82adbfd91aff8bafa303adfd472dd08cb09a2f490eb84a04
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1F 10436 bytes
font_02_sfnt_off000116b0.bin
adac3a4f8bb7e82243f9f62115ef86f52c9d4e7d2b483558dc606beb1f9d0e79
pdf-font-stream PDF embedded font (sfnt) at offset 0x116B0 17536 bytes