Malicious PDF — malware analysis report

Static analysis result for SHA-256 7512c4988eb58436…

MALICIOUS

PDF

77.0 KB Created: 2021-02-24 20:27:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a150c43d9462c8a79f1246c0d82c24f SHA-1: d2a147271a8059c93d8548f9f49dfa6a255153ba SHA-256: 7512c4988eb584368972a3e2147c4b3a12a76454aa567d75c8ad4bea2ed9d6fa
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are part of a link farm designed to manipulate search engine results. The primary URL suggests a lure related to 'food stamp receipt found parking lot map', indicating a phishing or scam attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=food+stamp+receipt+found+parking+lot+map
    • https://cdn.sqhk.co/pozuwifofub/hieiaia/street_racing_in_kansas_city.pdf
    • https://vonemiwez.weebly.com/uploads/1/3/0/7/130776812/ea3fca65b82.pdf
    • https://cdn.sqhk.co/golemejexeno/hc1v6Pr/shower_with_your_dad_simulator_wiki.pdf
    • https://cdn.sqhk.co/mujexoxa/WJDieRR/luxesemimebulisezegovu.pdf
    • http://jakartapro.xyz/maths_textbook_class_7_gsebxuf4w.pdf
    • https://cdn-cms.f-static.net/uploads/4465388/normal_601de5ca9aed5.pdf
    • http://moviesaddaa.online/domonen0abep.pdf
    • https://cdn-cms.f-static.net/uploads/4463785/normal_5fd13c5bd042b.pdf
    • https://ranaxeli.weebly.com/uploads/1/3/4/4/134478161/pojok.pdf
    • https://cdn.sqhk.co/dubikureta/gf0iabW/habit_7_sharpen_the_saw_quotes.pdf
    • http://winoorama.website/78943016610d20x9.pdf
    • http://lnstagramcopyrighthelps.com/tor_browser_windows_7_32_bitb03uf.pdf
    • https://cdn.sqhk.co/puvegipuros/kyujagg/directv_packages_for_seniors.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gudukamu.rf.gd/22842105915.pdf
    • http://tiwatimab.atwebpages.com/how_to_fix_rowenta_commercial_steamer.pdf
    • http://jiwepatifon.rf.gd/canadian_solar_330w_poly_datasheet.pdf
    • http://bodegifu.atwebpages.com/calories_in_dunkin_mocha_swirl_pump.pdf
    • http://kivozusemu.atwebpages.com/53044702595.pdf
    • http://ginowane.onlinewebshop.net/finance_manager_interview_questions_and_answers_uk.pdf
    • http://sobenikirija.rf.gd/conclusion_for_hotel_internship_report.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f09d.bin
7d0a456114535dfff522ec3051a5ebbc004fb6e555f5523acb6133fb98a63f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF09D 5492 bytes
font_01_sfnt_off00010340.bin
0d87fe430578b0419451e316531c270aec3ce9b58bb93e33c2ec41b5c18d33b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10340 10228 bytes

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