Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e43d5e68323cc0…

MALICIOUS

PDF

126.8 KB Created: 2021-03-15 05:02:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6317146f868e2d632ae450582f593d39 SHA-1: e1ef9bbb691c981a428722d18763b1dc4a357fb8 SHA-256: b9e43d5e68323cc0fbe015ff66dec5f55162d8f9f442f03a88142bc2b3893704
96 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to earthquake statistics, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=how+many+earthquakes+are+normal+per+year PDF link annotation
    • http://bigtittybella.com/54959763652mu6l1.pdfIn PDF document text
    • http://biomanua.website/64260988374k0bh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379471/normal_5ffc07ae8b2d4.pdfIn PDF document text
    • https://cdn.sqhk.co/wajidafix/Xih6haH/wazibumozuwusubunanig.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/1r2ePnC/59434612994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_5fe8c38838714.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446762/normal_5ffb36d92ed52.pdfIn PDF document text
    • http://dagomakiluje.iblogger.org/ewi_5000_review.pdfIn PDF document text
    • http://futup.ru/zinawumusj88k.pdfIn PDF document text
    • http://bluhgang.best/judajepoxide61jjs.pdfIn PDF document text
    • https://cdn.sqhk.co/zatovafer/HB5mJgj/screen_time_for_kids_app.pdfIn PDF document text
    • http://bcpzon4segurabetaviabcp.com/lubukikames58snh.pdfIn PDF document text
    • http://rirelavemug.iblogger.org/tipaduxu.pdfIn PDF document text
    • http://momentikshop.space/196745314546nkwi.pdfIn PDF document text
    • http://guvinesusavilo.iblogger.org/what_is_nash_equilibrium_econ.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489596/normal_5ffdc42234b0e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/taiwan_mrt_map.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/tp-link_powerline_tl-wpa4220kit_wifi_extender_starter_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/65890361906.pdfIn PDF document text
    • http://fixiwerasame.rf.gd/the_house_on_mango_street_sandra_cisneros_theme.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/filmic_pro_apk_cracked_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/android_textview_font_bold_programmatically.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A274 3372 bytes
SHA-256: 09c2c6a0900a6e9d1a0b6a30ec991bcef69b4564d1506a6b1eee991628c142bb
font_01_sfnt_off0001ae83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE83 5404 bytes
SHA-256: 55cb761d852e2fb032152a5bdb4d4ab996a9a6d51f9ba69b38329961a038f941
font_02_sfnt_off0001c0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C0CD 15648 bytes
SHA-256: bf7cd60c986877358c374272c4f90afd02a147dca2607e3327acd05b4e03b4ab

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