Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ceefa9f77d3bd19…

MALICIOUS

PDF

84.0 KB Created: 2021-06-30 07:04:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 27b8ba428205a76276b0fb5e8b8a9bb5 SHA-1: 0558af3155b946f0e6689d6ae08f6ea97701983c SHA-256: 9ceefa9f77d3bd19dc234934874835983d1e5fc07dbd5b9be7c76c668ef455dd
236 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam or a remote support tool lure. It contains numerous links to potentially compromised websites, suggesting an attempt to redirect the user to malicious content or download further payloads. The document's structure and embedded links strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://crysiq.ru/uplcv?utm_term=watch+big+brother+season+14+online+free
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/bedc30d9a6a5ed654f9352c9a438df01/77116408317.pdf
    • http://eakqshop.com/ckfinder/images_store/files/tufaterel.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8bc54d0336000a58e59950110d212414/15662995012.pdf
    • https://penzionradvanice.cz/res/file/xanajiwavofozufogana.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b84cfb9634---44222487742.pdf
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/876f4835994fba461058ed4dc3ea2972/zotapoga.pdf
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609b3122e4d58---rovupovukegagokezedexiku.pdf
    • https://samsungdvm.net/upload/ckfinder/files/falak.pdf
    • https://xo-sound.ru/userfiles/file/debegebedi.pdf
    • http://archinfo.ru/uploads/file/zasope.pdf
    • http://cokhitienvuong.com/uploads/files/tujomutisudakafol.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6b0988ce25---gumolupipoloxixe.pdf
    • https://cgeminfos.ma/upload/file/23650621352.pdf
    • http://malifer.hu/upload/file/54416018053.pdf
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db2044e4843---17124059255.pdf
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c862cae284---xunotubarutefuwuzaso.pdf
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/91mov454h3nmlvj5cc0t4q02v3/62311752187.pdf
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/083050054b9dd1404ae574ff28fecad4/nadubasuv.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c08f31b809f---29863714893.pdf
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/64d25098cca95c7449e0d5173498e0a0/51537839379.pdf
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/uretrll1t9klj8it15bs48gj4n/zosogexizexij.pdf
    • http://location-appartement-venise.com/italie_documents/files/baminadiparafanijezaza.pdf
    • https://invest.pl/userfiles/file/6586394305.pdf
    • http://cozycornerexpress.com/uploads/files/55091129058.pdf
    • https://alrukn.co/userfiles/files/pizawuwovanabi.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_off0000e504.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE504 16792 bytes
font_01_sfnt_off0000fd1b.bin
b91700fc0b2f7724dd2bcd56ec11be031ecf1e5f6bc34e5c2c7242f02c5b8ca0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1B 10876 bytes
font_02_sfnt_off0001164f.bin
e7992d3f1d78a90bb14fe6fb8b7bcbcd124c18351ef50e9303a41317335bc394
pdf-font-stream PDF embedded font (sfnt) at offset 0x1164F 17076 bytes