Malicious PDF — malware analysis report

Static analysis result for SHA-256 9671732b9baf2b15…

MALICIOUS

PDF

78.8 KB Created: 2021-03-15 16:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e981588a1f5b836e006397af364d404c SHA-1: 0162c4535ebcf8ffb4d21bf0e8f29126a8a6ed18 SHA-256: 9671732b9baf2b151ae093d822e0b1580cdbee091696067a9162a9b21636af53
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'https://zajinet.ru/wix?keyword=map+of+the+first+crusades', which is likely a phishing or malware distribution URL. The document body, though heavily obfuscated, suggests a lure related to historical maps, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/wix?keyword=map+of+the+first+crusades PDF link annotation
    • http://riforemepenog.iblogger.org/hogwarts_acceptance_letter_template_online.pdfIn PDF document text
    • http://kitukotobov.medianewsonline.com/81926621255.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/safiwenixejiji.pdfIn PDF document text
    • http://kevikakagax.iblogger.org/venn_diagram_powerpoint_template.pdfIn PDF document text
    • http://mapugukabazewu.scienceontheweb.net/atago_pocket_refractometer_coffee.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
    • https://s3.amazonaws.com/vitelitubovuluj/63338969205.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/dale_bredesen_book.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/android_apps_not_working_over_wifi.pdfIn PDF document text
    • http://jedalavupu.epizy.com/abc_reporter_will_reeve.pdfIn PDF document text
    • http://pulawev.epizy.com/29982255624.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/1992970816.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/63561605106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e396651-fe2d-41c1-a854-7d1c97727047/tulekexago.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/bahubali_movie_song_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1149b6c5-d764-4318-a0f7-7c16d60c214f/sigma_1609_sts_wheel_size_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/marblehead_reporter_police_log_june_2018.pdfIn PDF document text
    • http://bigapenegig.atwebpages.com/tivedonijofinobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b235b9e2-c156-4c51-afd3-1a706635fdd3/lubefop.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/aqw_void_highlord_farming_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a944aef5-6838-498f-81b4-7e4f0a8bbe5b/resudidojiwoloma.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/4174817483.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_off0000e8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EC 4992 bytes
SHA-256: 5f6b57dcb5a15d76bdd755d15ff9d9355f4596ee815ce9236220dfeb19717395
font_01_sfnt_off0000fa01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA01 11140 bytes
SHA-256: 8669d009f51a61362abcd4f0b59b3a0dcb5c6aff9f992a12473a74ef28b0da3c
font_02_sfnt_off00011fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FA1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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