Malicious PDF — malware analysis report

Static analysis result for SHA-256 854889ea5b385548…

MALICIOUS

PDF

81.4 KB Created: 2021-02-11 14:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a8d2fe7e36debcbb6619bdad03a41c0e SHA-1: e690d60d301e8bfa70967044ac36654db3c72ac7 SHA-256: 854889ea5b385548f0dfa793ee39586f5cfa1f3ee53cc19fa49ac7d27bc630da
136 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. It contains multiple suspicious links, including an invisible one pointing to 'http://lnstagram-support.live/infection_prevention_and_control_answersgqxax.pdf', suggesting a phishing or malware distribution lure. The document body contains garbled text, but the presence of URLs and the heuristic firings strongly indicate a malicious document designed to trick users into visiting a compromised site or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://jottigo.ru/wix?keyword=last+day+rules+survival+mod+apk+unlimited+everything PDF link annotation
    • http://grusha.space/pagoxukakefubamu5dczl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475559/normal_5ff8651074b78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_5fd8cbdfef5dc.pdfIn PDF document text
    • http://lnstagram-support.live/infection_prevention_and_control_answersgqxax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365549/normal_6003e9e58ca8f.pdfIn PDF document text
    • http://rollernefritmassage.xyz/tsm_custom_price_strings1llp.pdfIn PDF document text
    • http://braco.ru/kupewujaxefgo5r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483842/normal_5fe8726418e9b.pdfIn PDF document text
    • http://copyright-infringement.business/confidant_guide_persona_49ghi1.pdfIn PDF document text
    • http://gdztut.com/duwetigeguzexiriwawopxopz6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476146/normal_6007d7c240ba9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448332/normal_5fe10310e1152.pdfIn PDF document text
    • http://zespodsvetkoy.site/wallpaper_hd_for_mobile_carwph9o.pdfIn PDF document text
    • http://believes.space/757125471523nuos.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/nozanaxetetoh3da9.pdfIn PDF document text
    • http://inostrana.com/50172736968cq9eo.pdfIn PDF document text
    • http://cosmosqrab.online/kebuminuruvigererejixg18m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459785/normal_5ff0c118dd891.pdfIn PDF document text
    • http://itdomen.fun/pet_paradise_resort_and_spa415y3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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_off0000f44f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44F 5420 bytes
SHA-256: 89419c34021a0dafdff0b0c070806156ca7d3a4dc580d8773e5559b75ea85cd7
font_01_sfnt_off00010698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10698 10392 bytes
SHA-256: 9b2d3c7f9baca9d57f6e502f4a5836d4657cc38fdf8051315c2befe8079c282a
font_02_sfnt_off000129ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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