Malicious PDF — malware analysis report

Static analysis result for SHA-256 066043b81a47693b…

MALICIOUS

PDF

61.5 KB Created: 2020-12-16 17:29:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 11cb2e62452d027f3ebabb8e53a7cfe1 SHA-1: d87e78f571ace3fdfb8313e61edef82574031883 SHA-256: 066043b81a47693b10a6900ba2af0531377cff17dc509c1168a27ce07db00449
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that points to a suspicious domain, likely intended to host a phishing page or download further malware. No scripts were extracted, but the presence of an external URI and the overall detection profile suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=kenlin+rite+trak+ii+walmart PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416669/normal_5f9ae379c5057.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388629/normal_5f91d037e1c0f.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/ninasivol/peaky_blinders_tv_series.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/83362097803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cef9b3ef-77a2-4d0b-b931-5761ddec15c8/tidowope.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/jusepupusemuzepom.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/ben_10_up_to_speed_game_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd612d8-0ca5-4948-91ee-8578b26e6e7e/77357804079.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/99490557034.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/renunciation_of_executor_form_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/litefagawovatufabekuba.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/58657967236.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/97860944275.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/punaxagefuliroriw.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/who_is_mark_harmon_married_to_today.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/burp_android_certificate_pinning.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/4_days_to_go_cartoon_network.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_off0000b594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB594 4780 bytes
SHA-256: d079444a891113a67c71fa45973edc9c1628407e14e403f5d49c5cc1a986290a
font_01_sfnt_off0000c5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C8 10460 bytes
SHA-256: 3bd539cf84226a0f3a5ee0c7b607b35ffde7ae0fcb9d95297668a769167cc25d

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