Malicious PDF — malware analysis report

Static analysis result for SHA-256 9134532b266ede1f…

MALICIOUS

PDF

85.7 KB Created: 2021-07-01 23:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: be714e51c4f09aff1f076d0cca04c7ea SHA-1: 5bc78bfe23d999432afeba43734919f8e9a722bb SHA-256: 9134532b266ede1f6e01e7f6e71fb903aed9af2bea91a434d1b0791ee114bee4
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains numerous links to potentially compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://almondzwealth.com/administrator/imagetemp/file/zuwizalitidakixusek.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160901fc9d78ea---robuka.pdf
    • http://angeladaniel.eu/uploads/files/vevugajasiwog.pdf
    • http://nfraccon.org/userfiles/file/74670109023.pdf
    • http://grawerlik.pl/userfiles/file/54369810261.pdf
    • http://brmhn.com/userfiles/file/20210621214339_gmlwrt.pdf
    • http://princeworldwide.com/multimedia/userfiles/file/tovopeponugituk.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606d04f66876c---2697358160.pdf
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/d9225bc6c7c0ea2ed4ed58f5b01a475a/16739781390.pdf
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160c054fc27444---zajobotufamixikuj.pdf
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/9f02df9982b94a56f2f75d55bb151164/83830537043.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160997daba1f27---deweso.pdf
    • https://kocarbonag.com/luutru/files/nobefogubogilazoga.pdf
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/4fdac7b5f652a8d2979c42d0fa3e55fc/gubamorole.pdf
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab8d7a6168---fojajuxarimifavebilafarun.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16072ab609360a---pukevevisuwetepiwi.pdf
    • http://fine-cottage.ru/userfiles/file/kizemalosurut.pdf
    • https://ctners.com/ckfinder/userfiles/files/85338257607.pdf
    • http://astorandblack.net/emailer/userfiles/file/77964568003.pdf
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/85969afc31e93af50403add29b202139/7358523592.pdf
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b2eeaccd941---12980393551.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a28a88930fc---76730586260.pdf
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/4ksc4p89q2nu57an5d6ng619np/xizuxizasopufisotogomu.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=up+close+and+very+personal
    • 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_off0000ed19.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xED19 16792 bytes
font_01_sfnt_off00010530.bin
cfae5bed2d88e9da11f6eaed010a3fddaabad3153b93c5f6232c29622bc6871c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10530 10504 bytes
font_02_sfnt_off00011d3e.bin
6c0078f3a5ef3daebf144016318f2aa08799593f1d355621114e6e7e1e1045c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x11D3E 17176 bytes