Malicious PDF — malware analysis report

Static analysis result for SHA-256 e736a08d6ff5d00a…

MALICIOUS

PDF

88.2 KB Created: 2021-09-13 17:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 5b7bd25dfa97633030983a2aaf2e85af SHA-1: 066ebe0dcd2225fed704f20e6a9818cd460761ad SHA-256: e736a08d6ff5d00a9dd2959e9b11b94f0e6acdaa61dcdd13f61a14432103f106
176 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous links pointing to various websites, many of which appear to be compromised or disposable hosting. The heuristic 'SE_CALLBACK_LURE' suggests a callback phishing or tech-support scam pattern, indicating the links are likely intended to lead users to fraudulent content or services. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://0800-707-808.com/upload/ckfinder_temp/files/20210901165615.pdf In PDF document text
    • http://www.slenderclub.cz/ckfinder/userfiles/files/83728497270.pdfIn PDF document text
    • http://miskolciharsona.hu/pictures/file/82459827790.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/161331a1d95338---43457433293.pdfIn PDF document text
    • http://phutungquanghieu.com/app/webroot/files/ckfinder/files/61137776720.pdfIn PDF document text
    • http://conblocmanado.com/pics/file/pemipenoxezawodugixe.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161326b36b47b0---72752887710.pdfIn PDF document text
    • http://kleiberit.ru/files/file/49435229723.pdfIn PDF document text
    • http://letdentalab.com/img/files/24665329155.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210912_75226CCAD8830F55.pdfIn PDF document text
    • http://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/80955754203.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/295545af4fbc9b6158a5b61bde4a44df/20780283785.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161375b5d97339---tulosekajimowugetaluk.pdfIn PDF document text
    • http://blankheich.de/images/uploads/file/jalazodoxifekib.pdfIn PDF document text
    • http://max-metal.pl/gfx/file/pokevupel.pdfIn PDF document text
    • http://pogotowienaukowe.com/Upload/file/99263112566.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e288a9cf32---kogejesesuke.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/0fc8b5437c004d04c7d09cbead107e70/ronojonasejikola.pdfIn PDF document text
    • https://yesilkoyluleriz.biz/resimler/files/zikilejurefagosipuxo.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/4204056522.pdfIn PDF document text
    • https://shoppingplanet.cityplanet.ro/ckfinder/userfiles/files/xugebirotabor.pdfIn PDF document text
    • http://suncitygroup.ir/basefile/suncitygroupir/files/25357907037.pdfIn PDF document text
    • https://get-insurance.in/ckfinder/userfiles/files/kufepofenisewesajixifigob.pdfIn PDF document text
    • http://pinedafoundation.org/imageuploads/file/16897713741.pdfIn PDF document text
    • https://nexapos.com/upload/files/41543796940.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=pokemon+legends+arceus+androidPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA95 20696 bytes
SHA-256: b901b9a07c86e3db455094273226a233da2139592c942a7b1e63ecb8f639ad4d
font_01_sfnt_off000120d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000138ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138EE 10808 bytes
SHA-256: fbc94e8e83bbe150c5b808db921e280cfc2abe4908f3577cde177c9db544c49c

Open this report in the interactive analyzer, or submit your own file for analysis.