Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a8d39ad468fc34e…

MALICIOUS

PDF

858.4 KB Created: 2021-06-27 12:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4f48c17e3206384e843bf22c8d499c11 SHA-1: 01a5919bd49afa25abb076eb64bf5b5d4d53a944 SHA-256: 3a8d39ad468fc34e306957e1bbbbfb49eed9a96dc7d0d1c719324b3325891197
166 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations, likely serving as lures for the scam. The document's structure and embedded URLs suggest it aims to trick users into believing they are entitled to a prize or funds, requiring them to interact with malicious links to claim it.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6618

Heuristics 6

  • 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.
  • 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.
  • 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://inwebjor.ru/uplcv?utm_term=guyton+and+hall+textbook+of+medical+physiology+pdf+download
    • http://fletcherfamilyreunion.org/clients/52745/File/pugexegorenu.pdf
    • http://akcjonariusz.com/UserFiles/file/77323776401.pdf
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160710a91bffa7---33558394470.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b34e57503931621b35d43e4335205d0d/sazaxaji.pdf
    • http://asianmosaicnyc.com/userfiles/file/rezezujibunosen.pdf
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608887672df8c---tipurarinod.pdf
    • https://aprilboya.com/userfiles/file/99102945673.pdf
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/fe5f515ff5decff9be342a53eedc5d38/7148889824.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609062703ebd6---xoduruvaweteniterenebenu.pdf
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/e2e35762a56c88d330ec2af02c4eafce/pivonumoka.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/90e667be5f8bb64971aac7aadd9dd162/giliku.pdf
    • http://iphysiology.ru/upload/48686445962.pdf
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/meg45ooebnd8rjqfcdmjkdboh2/47909203917.pdf
    • http://iccarrentals.com/files/file/dotemogaxepotawofazit.pdf
    • https://xo-sound.ru/userfiles/file/7673678039.pdf
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/07eabc0193c4d3be2fb856f08f32ed9a/3841786856.pdf
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/4c1680ed1390cd0ab45a2337de652aa1/96167884703.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8720ad7790---67307428437.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16077d366e2897---57772457555.pdf
    • http://eortak.com/img/fck_temp/file/48412604431.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/1b9baa4de21c214027dc5e9d4c47d277/zovef.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000ce44a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE44A 16792 bytes
font_01_sfnt_off000cfc6d.bin
0b79f4deed2bc05919d51c336dd818a008ca6e478cdc3322c344c23b9544c095
pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC6D 11640 bytes
font_02_sfnt_off000d1770.bin
1ffddb75bdc19ece25e90d0f26fa4011bfdd02cac2bd27c1d82de11d19d32c7e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD1770 1624 bytes
font_03_sfnt_off000d202e.bin
8b8711e74f2e9e3b84a60e667e1d74e1291a7ba380fdb9240de1d419ac00608c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD202E 20636 bytes