Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ac001f7a43a9e45…

MALICIOUS

PDF

68.5 KB Created: 2021-10-03 18:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 7769847e7d4d70dcb38ab2b336314165 SHA-1: 7dc89d2475c7686ab6071d285ccda55a75570127 SHA-256: 0ac001f7a43a9e45b292dbe60ad45e98dca66c5f3313bca4626f7915410df624
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. The 'PDF_IMAGE_LURE' heuristic indicates it's an image-based document designed to trick users into clicking an embedded action. While no scripts were explicitly extracted, the presence of numerous unknown URLs suggests a potential redirection chain for delivering a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 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.
  • 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 http://agriturismolataggiasca.eu/userfiles/files/josetadorofuwipesunisuxim.pdf In PDF document text
    • https://www.temtechnologies.fr/ckfinder/userfiles/files/60565799359.pdfIn PDF document text
    • http://lyzjkgm.com/d/files/ronimim.pdfIn PDF document text
    • http://enricobarraco.com/files/jigipidunol.pdfIn PDF document text
    • http://gk-eventus.ru/admin/ckfinder/userfiles/files/vuwokadije.pdfIn PDF document text
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/82137118340.pdfIn PDF document text
    • http://studiorumeo.it/userfiles/files/38245161247.pdfIn PDF document text
    • http://magnumprint.ru/upload/files/31596481873.pdfIn PDF document text
    • https://rmduncanrealty.com/userfiles/files/fijegamevomireropu.pdfIn PDF document text
    • https://djecijagarderoba.me/userfiles/file/tanazagajirokusewuva.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/b002661c556d5512208db6f9d12199b3/dizedolalegevuroduma.pdfIn PDF document text
    • http://auroraenergyproject.it/userfiles/files/zufani.pdfIn PDF document text
    • http://aaykpn.com/uploads/editor/files/95135076870.pdfIn PDF document text
    • http://xn--q20b13r9leepaeb.net/upload/file/202109250711573233.pdfIn PDF document text
    • https://hawkseyetravels.com/assets/ckfinder/userfiles/files/72568114438.pdfIn PDF document text
    • https://dpdpunjabi.myskoolapp.com/FCKeditor/FCKimgUpload/file/14690785421.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/67592660444.pdfIn PDF document text
    • http://bantinnhadat.com/users/files/61195522548.pdfIn PDF document text
    • http://fc-junajted.com/upload/datoteke/potupodatevogijipew.pdfIn PDF document text
    • https://dollarplus98.com/images/upload/files/netituvakapelanasutuxiwo.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613497de1dbf1---taruj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=statistics+survey+project+examplesPDF 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_off0000aed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAED3 11016 bytes
SHA-256: 17128569c83a4bca32293f464d2f3e54c807789262bac671f050820fb33dad28
font_01_sfnt_off0000c876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC876 14460 bytes
SHA-256: 6c8099cb57cb80c14bb205309d90a8cd08eb32d64522cd396d94b45f4cb54ad0
font_02_sfnt_off0000ec75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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