Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06892509992b241…

MALICIOUS

PDF

69.3 KB Created: 2021-03-09 02:52:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8e8b6e34a2c1528a4ae70f913218a686 SHA-1: 5ad2fca261eef3ad285d4c8f53989b840bd28db1 SHA-256: f06892509992b241fc7923a13a6eae33c21d066b0ed7e32d0d54fdb9f51da0a2
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm designed to distribute malicious content or phish users. The document body, though heavily obfuscated, suggests a lure related to "Cambodia history book pdf". The presence of PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics strongly indicates a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8294

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/award?keyword=cambodia+history+book+pdf PDF link annotation
    • http://avto-document.site/doxuji6vkym.pdfIn PDF document text
    • https://dudepemak.weebly.com/uploads/1/3/4/7/134702006/vofin.pdfIn PDF document text
    • http://mritzoliver.design/basic_tactics_for_listening_3rd_editiew8v.pdfIn PDF document text
    • http://paypallsecurity.com/zalojokidaputalemogasenu96iti.pdfIn PDF document text
    • https://nezopubetuw.weebly.com/uploads/1/3/2/6/132681339/3733521.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/gDjbrzC/perogofirela.pdfIn PDF document text
    • https://rapofureduf.weebly.com/uploads/1/3/1/1/131164295/652531.pdfIn PDF document text
    • https://cdn.sqhk.co/waxobakal/gLNU9BF/mirror_neurons_empathy_ted_talk.pdfIn PDF document text
    • http://meetchat.space/how_to_transition_a_toddler_from_a_crib_to_a_bedi59a5.pdfIn PDF document text
    • http://itdiscount.info/sakotepamumotififaduzo8kab9.pdfIn PDF document text
    • http://jakor.pro/bekobojegapuropooltw.pdfIn PDF document text
    • http://xsafak.com/tobuvowatefinisifisof194.pdfIn PDF document text
    • https://cdn.sqhk.co/kupuruvew/S1gjsCD/open_camera_pro_apk_gratis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6997f972-013f-4c6f-ac95-4179ba17a557.filesusr.com/ugd/549e1a_c936fc3540834f1fbf69e4cb74aecf4f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/39f026d1-b124-4c48-b43d-c4d3af7ce95b/83693677699.pdfIn PDF document text
    • https://591e60e9-54e8-4b06-a9a7-f2e0522969d0.filesusr.com/ugd/1fd4b7_3a92b981da824b80a7bfe2ee8dd0837d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d133a9d1-2db9-483e-b6a9-82e91514d270/53512374161.pdfIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_12b87b9264834e1c9f435de825a61451.pdf?index=trueIn PDF document text
    • https://4a1cfc67-5981-466d-a13b-75576fe7431f.filesusr.com/ugd/64e449_b54425b8d9714e398a3393420210133f.pdf?index=trueIn PDF document text
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_d56854a7e62642a18495bd7713a5d4a4.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA7 5140 bytes
SHA-256: ab8896d345e2464084d635ea4f66664ae721040915f1068a7423dc9837b51d7a

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