Malicious PDF — malware analysis report

Static analysis result for SHA-256 6184d69bbfe7df1b…

MALICIOUS

PDF

86.4 KB Created: 2021-09-19 14:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fa3e92649161fc1ff875f57d26d0ceea SHA-1: 54143c370791c5757c201753516302d60cb264a0 SHA-256: 6184d69bbfe7df1b3655ce7c796080eea5d99ae62fa8c7ae90c095a7aa69d177
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. The document body, though heavily obfuscated, likely contains lures related to prizes or parcel deliveries, directing users to external links. The presence of numerous embedded URLs, many pointing to potentially disposable domains, further supports the phishing and scamming intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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
  • 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.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 http://sanchariglobal.com/userfiles/file/xikanamakebil.pdf
    • http://clair-environnement.eu/catalogue_dynamique/file/76912951410.pdf
    • http://master-br.ru/img/file/56441763330.pdf
    • http://mediedil.eu/userfiles/files/fobib.pdf
    • http://rkenterprisesonline.com/FCKeditor/file/56236344522.pdf
    • https://eclearusa.com/images/file/33252335636.pdf
    • https://angel-juicer.com/FileData/ckfinder/files/20210905_FF13DF893D1BDCDC.pdf
    • http://www.mearesandassociatesllc.com/siteuploads/editorimg/file/47320633018.pdf
    • http://accronline.com/userfiles/file/51711644675.pdf
    • http://mariautonoleggiomarsala.it/userfiles/files/letuve.pdf
    • http://bubb.cn/up_file/file/foxulenonexedipu.pdf
    • https://srsatta.com/ckfinder/userfiles/files/mivanufure.pdf
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161419a40ce215---65621208818.pdf
    • http://globalroomplus.com/bot/ckfinder/uf/files/gikekuvugijosudonosimumu.pdf
    • http://denis-lefebvre-services.com/fichiers/file/50398271198.pdf
    • http://worldtile.net/jangheung/userfiles/file/28741001564.pdf
    • http://viquadro.com/userfiles/files/52065963701.pdf
    • http://alacartedesign.de/userfiles/file/zazawepepinarizi.pdf
    • http://csc-vietnam.vn/uploads/userfiles/file/kinuwapesinagokelo.pdf
    • https://al-wesam.com/userfiles/files/76370746768.pdf
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ece32b22e---72884089798.pdf
    • http://olgapolyakova.de/files/files/diwogovor.pdf
    • http://tongrentangthai.com/UserFiles/file/42108215201.pdf
    • https://zweefvlieg.net/userfiles/file/12669546682.pdf
    • http://btfa.tw/upload/files/91776749894.pdf
    • http://dh-cell.net/ckfinder/userfiles/files/nemirapobefopos.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=usb+mtk+mt65xx+android+phone+driver
    • 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_off0000eb1f.bin
36274aacb2e16f1e91403f796211871a57196f46e900473e0b73fdc7db523edf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1F 11320 bytes
font_01_sfnt_off0001056d.bin
1dfeaf00c7353ffe93c3bf692f53bb5dd61098a0f6368306346eeae516157784		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1056D 17620 bytes
font_02_sfnt_off0001338d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1338D 16792 bytes

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