Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f8e2a2efa3b9e8…

MALICIOUS

PDF

69.0 KB Created: 2021-01-17 20:01:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0d7ab521b36cb575cb940d69b696b637 SHA-1: 948738f984f553dc988c9bf352d78d582d0ac1d0 SHA-256: 59f8e2a2efa3b9e811c432beaf5c5a56faafe86967b9a5fc52a8cfd15c546f47
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with the primary one being https://trafffi.ru/123. The PDF structure itself does not contain executable scripts, but the presence of external URIs suggests a phishing or malware distribution attempt. The document body is heavily obfuscated and unreadable.

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://trafffi.ru/123?utm_term=the+most+dangerous+game+dramatic+irony PDF link annotation
    • https://cdn.sqhk.co/zupuguvawaj/hbjfGih/soccer_star_2020_hack_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485693/normal_5fc3cc2f758b5.pdfIn PDF document text
    • https://cdn.sqhk.co/totuzilexif/dU3iaON/the_crossings_premium_outlets_coupons.pdfIn PDF document text
    • https://cdn.sqhk.co/bonosexov/GihjcC6/slot_machine_apps_without_in_app_purchases.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5fe6514c8c9cc.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/ieifeay/56617280657.pdfIn PDF document text
    • https://cdn.sqhk.co/waxigapo/ghdwaig/easy_wd_my_cloud_apple_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/paxepilekot/bCqjfgd/mobile_recharge_number_dena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446400/normal_5fc2eea263718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462046/normal_5fd64506746d2.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/ijg8iiE/mountain_bike_off_road_trails_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/cjhJbnr/86333777377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_5fb28f541a41a.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/waxapoz/gababevexefa.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/wadimataren.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/upgrade_axis_blade_guide_ff13.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/74588913142.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC291 5256 bytes
SHA-256: b819b89dc228c47b644222b71f5eebc81b692eb9c08aa8038681169c502cacff
font_01_sfnt_off0000d44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44E 10132 bytes
SHA-256: c046523ee4130b5a51fcdc8c77593dea7d2c55aba945a8e93f463b9eeb49d0c4
font_02_sfnt_off0000f6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FF 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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