Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56a1058d528c87a…

MALICIOUS

PDF

98.6 KB Created: 2021-06-28 02:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 26b732e244f6f568c04cea89c9808d41 SHA-1: a41240d8dde2be51b876c4ecf6d7b71e8afc63b9 SHA-256: c56a1058d528c87ad3ee047420499d5793b72b9b4e52d788fa8c359808f4fecd
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains language related to lotteries, prizes, and parcel delivery, aiming to deceive the user. The presence of numerous embedded URLs, many pointing to compromised WordPress sites, further supports the malicious intent. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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.
  • 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://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/6b05ca1797520c0919968bd55b302da3/93529259869.pdf
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/n86kasjkcfausnbd5m1o35seu5/39544305243.pdf
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bf0bf757460---5094857108.pdf
    • http://ankamet.com/userfiles/file/78379164601.pdf
    • https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/dejomofinafogepimup.pdf
    • https://acronimocostanzo.com/userfiles/file/vawenusexewemupu.pdf
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a08354898---mekebajegovi.pdf
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160907fe59c287---ramegawalageg.pdf
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5460752d6---51813352487.pdf
    • https://salvamontbihor.ro/app/webroot/files/userfiles/files/fivopezalewavunuzomijawer.pdf
    • https://www.acetechnology.co.in/wp-content/plugins/super-forms/uploads/php/files/voknss1g4lduvicamjbjjb40b6/31063942100.pdf
    • http://www.contectrade.hu/fckfiles/file/24034373826.pdf
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/4e4ca55842b0181f3b947ad6765db194/puluripi.pdf
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160aaa3b7b9a61---sezaju.pdf
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/5fa1b2be821a400120f8f250e8a2e9c2/wejepal.pdf
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16089f6d75d57e---80155166979.pdf
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160944fe944819---67480105894.pdf
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/84395fbd5aa0eeef8a2bbf3530c2f188/95598247211.pdf
    • http://targhevaticane.it/userfiles/files/90062922797.pdf
    • https://xo-sound.ru/userfiles/file/45080918237.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/a544f99f97dcf9acdd96d2006dc403a6/81019032592.pdf
    • https://jyapa.com/jhuoyue/uploadfiles/puzemawiwodaxixozo.pdf
    • http://pogologistics.com/ckfinder/userfiles/files/jafifugakiwovudexiv.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077ab256f95c---15573252243.pdf
    • https://bojovicsirogojno.com//files/fukilif.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=mary+berry+black+forest
    • 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_off00011af7.bin
b9289ce4b785f7d6e4bfa50e09a7bcb2383fc4d4c164090fd480db051563a8f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF7 10472 bytes
font_01_sfnt_off00013307.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13307 16792 bytes
font_02_sfnt_off00014b19.bin
0a190211e7ee49ec865e328dff43521959c1677821372c1293777c9e592f3ad6
pdf-font-stream PDF embedded font (sfnt) at offset 0x14B19 19736 bytes