Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ccd4296382d41d…

MALICIOUS

PDF

71.2 KB Created: 2021-10-08 12:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: f74a71f243244e089471bd9b9f93f784 SHA-1: c09ba1d290c37da6737d952a503a2e2dd988d9aa SHA-256: 00ccd4296382d41dd68dfda48543dbb73d9a43779327a5871118fc0ec767075e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs and is identified as a link farm, suggesting a phishing or malware distribution attempt. The presence of 'LOLBin token sequence in document text' indicates potential execution of commands, possibly leveraging JavaScript within the PDF to interact with external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8295

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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
  • 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://ketchas.ru/uplcv?utm_term=what+does+the+owl+pellet+reveal+about+the+owl%27s+digestive+system PDF link annotation
    • http://hcbarrett.com/user_area/file/51602312095.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/95745164304.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b0d7ce2997---jifebejarovomozob.pdfIn PDF document text
    • https://toocapen.com/files/80345627388.pdfIn PDF document text
    • http://likuidart.com/files/ckeditor/files/bepoximaxim.pdfIn PDF document text
    • http://itineraire-consulting.com/ckfinder/userfiles/files/nopejenufufunevukegelob.pdfIn PDF document text
    • http://itagqatar.zajeltel.com/itag/file/files/napulefakalojebupex.pdfIn PDF document text
    • http://huyminhplastic.com/upload/files/17934278958.pdfIn PDF document text
    • http://studiomarcheluzzo.it/userfiles/files/rolifipo.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16159591f98ba9---19340667817.pdfIn PDF document text
    • http://charmingcurls.se/upload/file/kofolimuvapexi.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/58914838822.pdfIn PDF document text
    • https://jvlegacyhomerepairsmd.com/nbloom/fckuploads/file/rebetukopozalepawadijeku.pdfIn macro / runtime command snippet
    • http://s-pack.kr/userfiles/file/20210928062244.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/lufikojito.pdfIn PDF document text
    • http://aibrpjoaae2.specialty-match.com/upload/files/jatilefutuxonejekagu.pdfIn PDF document text
    • http://szcftz.com/upload/mowomoserurivu.pdfIn PDF document text
    • http://illinoislivestock.org/userfiles/file/xuzefavisiratobiwizidog.pdfIn PDF document text
    • http://jpsacademy.com/slbdavbatala/userfiles/file/sebibowotutorowufep.pdfIn PDF document text
    • https://shiprapublication.com/uniformkontakt/userfiles/image/files/20750617947.pdfIn PDF document text
    • https://vinasimex.com/uploads/file/88176783367.pdfIn PDF document text
    • http://cathugo-yachts.de/res/wysiwyg/file/kozugejinoje.pdfIn PDF document text
    • http://jonellchem.com/upload/files/wavobegeveserafudosin.pdfIn PDF document text
    • http://fandimnarodakIn macro / runtime command snippet
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE05 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61C 11268 bytes
SHA-256: a0b62c679a148388c5cf48b1e88e077345cf0e31184663f343219b48e589457f

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