Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf697aea96c75ea…

MALICIOUS

PDF

68.7 KB Created: 2021-09-01 10:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 421eebc639b2fe1b2238dc89c447c5f6 SHA-1: 4eb21dcb5d0efe075afd601158c5e98d7d2f55dd SHA-256: abf697aea96c75ea72f5a48f4cdd4d0940b387cf72f9e3f09c275e7f48e1e01d
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains minimal text and a single image, typical of a screenshot designed to conceal clickable links. The numerous embedded URLs point to various domains, many of which appear to be compromised CMS uploads, suggesting an attempt to redirect users to malicious content or download further payloads. The presence of multiple external URIs and link farms indicates a broad phishing or distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://crewmak.ru/uplcv?utm_term=peyton+manning+in+the+hall+of+fame PDF link annotation
    • https://theelementrama9.com/userfiles/files/dogonujiguredefajunufofo.pdfIn PDF document text
    • http://vinaktv.com/storage/ckfinder/files/wolixifope.pdfIn PDF document text
    • http://psychanalyste-gard.fr/ckfinder/userfiles/files/kepevamowirepurizajubagak.pdfIn PDF document text
    • https://kildevangen.dk/files/xokagelezezukoxa.pdfIn PDF document text
    • https://sportsht.com/userfiles/file/fuzar.pdfIn PDF document text
    • http://murphysbeads.com/clients/54316/File/86919132548.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609495cf6dfc6---42152124836.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/91719b590d12d386172a629620ac1abf/surupijevitopezukevad.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16113f13273847---penulufufomilolibulexovul.pdfIn PDF document text
    • http://lamelove-zakryti.cz/userfiles/file/zokedupuvimofozefitudanax.pdfIn PDF document text
    • http://sweatrinserepeat.com/ckfinder/userfiles/files/vusugokudojosemusoduloj.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606deb5969f10---fidimezavanesilijur.pdfIn PDF document text
    • https://la-klamm.org/userfiles/file/46738376730.pdfIn PDF document text
    • http://affordableadobe.com/ckfinder/userfiles/files/ralomazawikowiviwuxir.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/55401574321.pdfIn PDF document text
    • http://cnex.cc/images/blog//file/migosavok.pdfIn PDF document text
    • http://hytechplus.com/userfiles/file/gujaxegataruditiwogunow.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/1554cgh0h3hf8nd0fbgu8qhhl7/zoburexapizibimupepev.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/870eaca793003a9aa9449ad198c81748/zoxotemipatiborelidi.pdfIn PDF document text
    • http://thongthien.vn/upload/files/62774500098.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b315280a730---sigetumudur.pdfIn PDF document text
    • http://studionegro.net/userfiles/files/42949912162.pdfIn PDF document text
    • http://maturitni-ples.eu/UserFiles/File/55165941396.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/67b237746caa53412794bc3e7f56c484/lojemixuzovesep.pdfIn PDF document text
    • http://cnex.cc/images/blog//file/57531133998.pdfIn PDF document text
    • 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_off0000b24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB24C 10508 bytes
SHA-256: b5e75b3217103d885fc2450e55fd6bfe2e49a89b18ab87b2070c58663393146a
font_01_sfnt_off0000ca03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA03 14324 bytes
SHA-256: 2d20af06f245039673aa83da7f3af39fd9db5f4bfdb1930d3834cbcf9c4c79bd
font_02_sfnt_off0000ed46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED46 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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