Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f259546abd76bf…

MALICIOUS

PDF

86.2 KB Created: 2021-09-17 19:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6f19a104313b6231fb3f4b21a9ca28ac SHA-1: 147a4525258014508b6c955f31b1e01cbe053b17 SHA-256: 38f259546abd76bf43836cf38d3af08732be746672bdc057b4fd5a43d341e03a
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains embedded JavaScript, suggesting it may attempt to perform malicious actions upon opening, such as redirecting the user to phishing sites or downloading further payloads. The presence of numerous external URLs, many hosted on disposable domains or compromised CMS uploads, further supports the malicious intent, likely to facilitate the scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://archism.ru/uplcv?utm_term=my+wifi+name+is+not+showing+up+on+android+phone
    • http://files.ibiza-ferien.de/file/tugejagexo.pdf
    • http://ghettaetamionarchitetti.it/userfiles/files/polopuxanelule.pdf
    • https://odlingfamily.com/userfiles/file/fokepudesibikugokuk.pdf
    • http://e-motyle.natura2000.pl/imgturysta/files/89113049788.pdf
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16140488f07d98---pimapereboviletesereli.pdf
    • http://turystyka.powiatlubartowski.pl/admin/ckfinder/userfiles/files/73915239137.pdf
    • https://saikekanglun.com/filespath/files/20210917133322.pdf
    • https://biserica-izvorul-tamaduirii.ro/files/vazorobe.pdf
    • http://mytrangroup.com/uploads/userfiles/file/47195567945.pdf
    • http://omeofest.eu/userfiles/files/24619505491.pdf
    • http://kanchanaspa.com/ckfinder/userfiles/files/fedofewegabuzelibukap.pdf
    • http://ei-windykacja.pl/upload/file/9498449233.pdf
    • http://ahkkpcm.org/userfiles/negidexibuzolega.pdf
    • https://damiel.eu/userfiles/file/60655290031.pdf
    • https://linlinline.biz/js/ckfinder/userfiles/files/17892974824.pdf
    • https://balajitutorial.com/admin/userfiles/file/69470746672.pdf
    • http://pnc21.com/files/fckeditor/file/1736725519613cad58e6576.pdf
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/161323ce38c4bf---vutumurikureven.pdf
    • https://rijst.nu/userfiles/file/xalupobu.pdf
    • http://katachizu.com/img/news/files/10984095071.pdf
    • https://simorgh.it/uploads/file/97612641031.pdf
    • http://fantasymusic.it/userfiles/files/94291546957.pdf
    • https://turismopontevedra.com/ckfinder/userfiles/files/85875472594.pdf
    • https://pr-dienst.ch/file/82169952858.pdf
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/99598bf6faa15d2fdb68ffeea6ce25d2/pezibizewasikorapumobob.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_off0000ea9d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9D 16792 bytes
font_01_sfnt_off000102b4.bin
f217e9580bcd97a3bcc3c631c5cd3969d81855fc20215151ce26905beb766f7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x102B4 11192 bytes
font_02_sfnt_off00011c91.bin
2f59935b24d0937c6c259fc886311415d4662330cbcc597ba2d945d2791cb0e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C91 17620 bytes