Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d7d9ecdd4409cd…

MALICIOUS

PDF

78.8 KB Created: 2021-04-05 02:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06ddaa1e649bdb94a5ebc5256925e8b9 SHA-1: af20a648e8b8d95f9dccc6d501e4aadd209e5f9b SHA-256: 03d7d9ecdd4409cd556d6fece96c9cc3f9ce6d900959d252fa0e65fca03de501
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page or deliver a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to conference proposals.

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://druttle.ru/wix?keyword=cec+2020+conference+proposals
    • http://badodamibevije.iblogger.org/31821803630.pdf
    • http://particulier-societegenerale.xyz/uk_stock_market_opening_todayc4myb.pdf
    • http://sosuziba.mypressonline.com/68759810070.pdf
    • http://likefetevu.getenjoyment.net/56672456308.pdf
    • http://bitsracing.net/what_are_3_main_characteristics_of_transcendentalism_literaturemw59n.pdf
    • http://zutolewe.mywebcommunity.org/vemorolotefob.pdf
    • http://rameautbxy.space/finelidivapemow78w7r.pdf
    • http://xamawigokoke.mygamesonline.org/fefesafitareteboderoken.pdf
    • http://price-list.moscow/core_connections_integrated_3_answerk1cbu.pdf
    • http://jesawukimefix.mypressonline.com/4768491778.pdf
    • http://tagoturuluro.medianewsonline.com/biology_questions_for_ssc_cgl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/49f798fe-d2a5-4010-8d21-cd8fe082a2c4/how_to_use_elastic_bands_for_exercise.pdf
    • http://najirukijo.rf.gd/vicks_warm_steam_humidifier_reviews.pdf
    • https://uploads.strikinglycdn.com/files/c66a29f2-bbfd-4508-aea5-0dff6871085a/abit_ip35_pro_review.pdf
    • https://uploads.strikinglycdn.com/files/8bc2372b-6267-45d2-a298-b0e0784ec5cf/33355992676.pdf
    • https://uploads.strikinglycdn.com/files/8277c5e2-3712-4067-8f80-6d25e2c67566/motivation_assessment_scale_mas.pdf
    • https://uploads.strikinglycdn.com/files/9e17fadb-98e9-4cd6-8d70-060b3da0272e/81728149012.pdf
    • http://rowesatuminef.rf.gd/noxofofewigotavudiwun.pdf
    • http://jowawaba.atwebpages.com/fovaxesodevujozuromoni.pdf
    • http://desavoz.epizy.com/agamben_state_of_exception.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_off0000f5d6.bin
c2450e6f99bbb7e172ed51ffaa3887c49d957ec299827e10a0d101348fba72e6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D6 5188 bytes
font_01_sfnt_off0001078b.bin
f3908d65614f9af9a700a3fb24f42c78451dcdf70d3c1a7dfc826f0d010eb6bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x1078B 11328 bytes