Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa37ac863cbe63a0…

MALICIOUS

PDF

86.6 KB Created: 2021-03-25 10:55:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 332434d8ac400689c29901036b77875d SHA-1: d5e93e5604eb82dd87baeef6ed655ed57eca7a15 SHA-256: aa37ac863cbe63a02bc73838ede1b480556b554ea419b7dc5e6f31f73e2f5de3
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, appears to be a lure related to a 'Sage leveling guide'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/wix?keyword=sage+leveling+guide+ro
    • https://cdn.sqhk.co/mujowofapubi/fbgiijg/bloons_td_battles_mod_apk_android_1.pdf
    • https://wuwoxidip.weebly.com/uploads/1/3/4/4/134492879/sunududibizili.pdf
    • https://puzagoliwosur.weebly.com/uploads/1/3/4/4/134462366/gekovep.pdf
    • https://cdn.sqhk.co/resozasevej/jfx5nha/sniper_strike_shoot_killer_mod_apk.pdf
    • https://lejimawemo.weebly.com/uploads/1/3/0/7/130739028/8261947.pdf
    • https://vimixake.weebly.com/uploads/1/3/1/1/131164471/vojafevux.pdf
    • https://vilujelirajoki.weebly.com/uploads/1/3/4/3/134378771/pejapekona.pdf
    • https://cdn.sqhk.co/julukijowi/geXjdhh/csgo_skin_color_name.pdf
    • https://cdn.sqhk.co/rusefijow/WgiaheW/vujedu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_e7fc6ed357684550ae01066ac26cf457.pdf?index=true
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_4502d720a72d45abb7e6cc726380a9e4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/26221f46-1648-472a-8657-16c16c28054b/vusorumajos.pdf
    • https://uploads.strikinglycdn.com/files/b6d125c6-861b-4e6b-925c-59fd49820486/zozijuvapunemavajer.pdf
    • https://uploads.strikinglycdn.com/files/9aa1d938-7c6b-40f7-95b2-1ed326acb732/tuluwenifarupameme.pdf
    • https://uploads.strikinglycdn.com/files/63fa378e-d093-40df-a1f5-0a2971d91083/jee_main_2016_question_paper_only.pdf
    • http://gikisomu.epizy.com/background_images_free_computer.pdf
    • https://uploads.strikinglycdn.com/files/5234f4f4-f1a4-4f4a-bc12-4efda86ccac9/gisugesinumiboveb.pdf
    • http://zakuvusebaj.epizy.com/how_to_backup_android_contacts_to_computer.pdf
    • https://uploads.strikinglycdn.com/files/417c4825-cb0f-452c-9f31-13c62940c67d/poetic_edda_best_quotes.pdf
    • https://441dbedc-201a-49d7-bb2a-292980023e2b.filesusr.com/ugd/473728_31aa4f16ef9e4e4f8a26bb2d9f88858a.pdf?index=true
    • http://tujefuguxofela.rf.gd/collision_reporting_center_toronto_hours.pdf
    • https://uploads.strikinglycdn.com/files/2fda114c-e362-45e3-bbbe-f9896fde6501/all_religions_based_on_astrology.pdf
    • http://renutaxejedoxe.rf.gd/pulin.pdf
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_6fec4b2a9cd545f195853e79a24c440c.pdf?index=true
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011639.bin
19af07652a3d1f7ff916ad5f46360d293cee89f60ce0399a43f1efcb9b0d0ff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11639 4980 bytes
font_01_sfnt_off0001273b.bin
ce0813d958cb48e7eee11622a0c415b753cf30717d65cb0ae416dc5ad77c3014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1273B 11044 bytes

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