Malicious PDF — malware analysis report

Static analysis result for SHA-256 55413160a80cfda9…

MALICIOUS

PDF

68.1 KB Created: 2021-03-10 19:46:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 07730acd8391d26383fd87ca01975622 SHA-1: b33e75371700f045289a9adbfa7b320937b08e49 SHA-256: 55413160a80cfda939bddd45b9bb9aafcd383ceda64983fbc6f3c202fa06d6bb
96 Risk Score

Malware Insights

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

The file is classified as malicious by ML and ClamAV, with heuristics indicating the presence of external URIs. The embedded URL `https://xajibur.ru/aws?utm_term=shop+vac+replacement+switch` is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit vulnerabilities or trick the user into navigating to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://xajibur.ru/aws?utm_term=shop+vac+replacement+switch PDF link annotation
    • http://movoxazukum.22web.org/sesowafefowikodaxavem.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/Kjajgjc/34107327812.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/vigifgg/best_dog_ball_thrower_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/hfUbhae/felilodiwogefirev.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/hfiahh3/25482496195.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuravaxoxi/ggjDgi0/29289570472.pdfIn PDF document text
    • https://cdn.sqhk.co/wemonamo/iaeFigq/online_quran_teacher_jobs_in_lahore.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/hajgkge/99758397485.pdfIn PDF document text
    • https://cdn.sqhk.co/bezorufuv/ibigsji/cannon_ballers_food_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/hagg0jb/ramp_car_jumping_level_9_how_to_beat.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/wobuzisibal/muliju.pdfIn PDF document text
    • http://gowojurepola.epizy.com/13027810113.pdfIn PDF document text
    • http://kedefusa.rf.gd/integration_of_secxtanx2.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/86587455774.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/51733183981.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/83956315069.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/is_house_of_leaves_a_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/12001633048.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/change_password_on_outlook_account_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/73003942364.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB6C 5428 bytes
SHA-256: 5fc890506282aff006e7dfba28d05f699c63c99339f4f6281f0fa756eca2fd54
font_01_sfnt_off0000ddc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC8 10928 bytes
SHA-256: b87ba349527c3e593b0bd4fe1d2075e6418a272ecc4081ee1a46149e9a90ba11

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