Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebaa25b09e28719…

MALICIOUS

PDF

75.5 KB Created: 2021-04-19 00:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 715a1b0ef20637d5b51227e9df188ea1 SHA-1: b9ab03c47da090147dc8ed4c2cb464b5d542b585 SHA-256: cebaa25b09e2871918bef08747d10954ccf779b4a6b2a3a4876df2f902517f94
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a lure related to appliance repair, likely leading to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF format and embedded URLs are commonly used for initial access via spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/strik?utm_term=cabrio+washing+machine+lid+lock+flashing
    • https://cdn.sqhk.co/genonitag/ahthjjC/sixuxud.pdf
    • https://cdn.sqhk.co/fepefudasor/hgichai/bbc_dinosaur_world_game_free_download.pdf
    • http://axacheat4.xyz/122548088480sdgc.pdf
    • http://itawegan.fun/pulipegalojamikefozinaryycwb.pdf
    • https://cdn.sqhk.co/tovitaxani/7gh0Bgc/bowmasters_new_characters.pdf
    • https://static.s123-cdn-static.com/uploads/4387929/normal_5fd048752eb3f.pdf
    • https://cdn-cms.f-static.net/uploads/4503279/normal_603f89075bef8.pdf
    • http://runmasten.online/little_house_on_the_prairie_the_last_farewell_youtubeq2nei.pdf
    • http://instapriz24.online/what_statement_best_describes_the_message_of_the_political_cartoonmp22i.pdf
    • https://cdn.sqhk.co/bijilixiger/gjdgjjd/nivezazokuruzikowolenewos.pdf
    • http://nefuwumimo.iblogger.org/giuseppe_conte_cv.pdf
    • https://cdn.sqhk.co/tutabudoxuwa/igfggia/66203922489.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dagubumomoze.rf.gd/sogixufinetofoxavosanaf.pdf
    • https://uploads.strikinglycdn.com/files/4d2790a0-c501-4534-88d9-b8f2eaa069a3/4600729711.pdf
    • https://s3.amazonaws.com/wozowuledij/ripenavesebimun.pdf
    • https://s3.amazonaws.com/pajukovuxetu/free_background_power_point_animasi.pdf
    • http://renowuvix.epizy.com/aristoteles_politik.pdf
    • http://vonubopoz.rf.gd/what_government_did_the_soviet_union_have.pdf
    • https://uploads.strikinglycdn.com/files/a8d10196-008c-418c-9872-51115b0fc8d9/genie_model_1024_setting_limits.pdf
    • https://uploads.strikinglycdn.com/files/bc264e0e-c6fd-4942-ae08-42f5b09db7b5/dolores_cannon_between_death_and_life.pdf
    • https://s3.amazonaws.com/zumomasugipeno/android_alarm_clock_project_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_off0000e81e.bin
0c23efb96079b53178da156ac93cf14d99411244fd16c367d01753eb573b80dc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE81E 5636 bytes
font_01_sfnt_off0000fb2a.bin
4e5a7b089e7d5f52cae58e5fcdfad10da1975beb40803d014ab145e94a6f55fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2A 10448 bytes