Malicious PDF — malware analysis report

Static analysis result for SHA-256 6705484d851a639c…

MALICIOUS

PDF

96.2 KB Created: 2021-02-20 07:03:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c42e04eaae914cc896ec6a120c92c84 SHA-1: 7e2d26287f5f6e3c85085f0bd608c2466fc85a22 SHA-256: 6705484d851a639c352ac3e90aeb7b9e4dea96f7c75c4155a4a2e6c573ad32ee
116 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV and an ML classifier. The 'SE_CALLBACK_LURE' heuristic indicates the document attempts to trick users into calling a phone number, consistent with callback phishing or tech-support scams. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it may host or link to malicious content, potentially leveraging JavaScript for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://leonvi.ru/wix?keyword=gta+cheat+codes
    • http://naturwows.space/midinizotonogupo7jf73.pdf
    • http://verification-help.com/women_s_voices_feminist_visions_freec8pd5.pdf
    • https://cdn.sqhk.co/vufuvevu/jfCih9a/97062279067.pdf
    • https://cdn.sqhk.co/mofekuma/Ejf3Wje/anime_girl_background_phone.pdf
    • http://tb-films.ru/learnzillion_guidebooks_2._00cu6o.pdf
    • https://cdn.sqhk.co/dafisuwikib/ageieia/truck_craft_dump_insert_parts.pdf
    • https://cdn.sqhk.co/xoberuweri/RghNSib/kedugesivefozivipexerax.pdf
    • https://cdn.sqhk.co/zolilobup/UgegfMR/nikegawiw.pdf
    • https://cdn.sqhk.co/mudifuto/iaP4vn8/71297810727.pdf
    • https://cdn.sqhk.co/gusisitixinu/ghp5ihf/beard_oil_kit_uk.pdf
    • http://goldstein.capital/google_play_store_apk_android_2._29fwgy.pdf
    • https://cdn.sqhk.co/goxejake/fbFAOhO/field_hockey_goal_box_dimensions.pdf
    • https://cdn.sqhk.co/zinazejoras/hesjdih/sculptor_credit_opportunities_master_fund_ltd.pdf
    • https://cdn.sqhk.co/zogameva/bKHakjb/dagusutedoredanutuwosop.pdf
    • https://cdn.sqhk.co/zupuguvawaj/i4khgjd/8064410425.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lezopobigeza/bhimavaram_bullodu_songs_doregama.pdf
    • https://s3.amazonaws.com/zidosozawok/apbie_hall_tickets_2019.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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001217d.bin
4e70d687e2f0ea5dd3ba8fc48e027aeff81d802bca87584c350d611e97965c8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1217D 4564 bytes
font_01_sfnt_off00013108.bin
01ef24dafc7f12bc402ce77ba7cbd55f4f6e1e8400b954188442f1b68a7055ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13108 19912 bytes
font_02_sfnt_off000165aa.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x165AA 4324 bytes

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