Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be5cdb60ee5941d…

MALICIOUS

PDF

69.6 KB Created: 2021-09-29 05:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9fd2ccd0c696c4c21c6b8e79a3d09438 SHA-1: 1a698bdf20a15fd82e0b267e0cd2f778ad23fe5f SHA-256: 9be5cdb60ee5941ddd492cb9ad99111e06233c6169ef764533dd2814a5d21191
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, indicating it functions as a link farm. Heuristics identify it as a potential phishing or malware distribution vector. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it is designed to redirect users to malicious content, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://irlanc.ru/uplcv?utm_term=dark+souls+spell+damage+calculator
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/3cm06v1pthsjj17ucudfv3mep3/48355644511.pdf
    • https://mavibusiness.it/file/posesilejojeke.pdf
    • http://drivingschool-brno.eu/files/rilulit.pdf
    • https://agros.net/uploads/file/81874974939.pdf
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16151beca6e81a---nifufologoboxovasib.pdf
    • http://biometria.pl/photos_fck/file/vegubepozaxulejivewewa.pdf
    • http://erbamedica.org/userfiles/files/9406101210.pdf
    • https://tahubunting1.com/contents/files/vazojozosexukasaxa.pdf
    • https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/xilomelofeperidakutuki.pdf
    • http://metafelix.it/userfiles/files/32177119592.pdf
    • http://almar-bus.pl/userfiles/file/detujolusimekesuserisut.pdf
    • http://controlsystemco.com/cache/fck_files/file/17393395286.pdf
    • http://koddous.com/userfiles/file/fopuwaninuxatesosunar.pdf
    • http://macabrey-luthier.fr/data/Files/59126296240.pdf
    • http://silverspringabw.com/uploads/files/rizefabazupifun.pdf
    • https://pfollowers.com/ci/userfiles/files/lomirevuvejewakulewexuj.pdf
    • https://serviceelectric.ca/userfiles/file/65642800915.pdf
    • http://beganijewellers.com/ckeditor/ckfinder/userfiles/files/32891097246.pdf
    • https://kohphanganhotelandtour.com/userfiles/file/72587169411.pdf
    • https://processwork.archerhuang.com/ConImg/files/jogituwexerezet.pdf
    • https://sensesgrouphk.com/louis/STARKGROUP/ckfinder/userfiles/files/55677929133.pdf
    • https://jerseyshorepirates.com/userfiles/files/40665578294.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b018.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB018 16792 bytes
font_01_sfnt_off0000c82f.bin
5d7f54746a9818dfe6f8b343d8b6d73ab83280fd1a8f748cdf6eeb634186ebb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC82F 10852 bytes
font_02_sfnt_off0000e11e.bin
9147b87bc938ae3c6ee087d49a91344c94289750cd1e3c88f4f58a8ed2789488		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE11E 15512 bytes

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