Malicious PDF — malware analysis report

Static analysis result for SHA-256 99173bd822dcfa92…

MALICIOUS

PDF

140.2 KB Created: 2021-03-05 22:00:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 008a1ad835978a9ab950900fdec68dd9 SHA-1: 2475173f4d42dc5d0bdbdf2507b35d7cdd8f53d7 SHA-256: 99173bd822dcfa925b4b16aa737712cdbbb7dee7bda605996d19413418ae7983
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a heuristic indicating an external URI. The presence of a download button lure and a callback lure suggests a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI point towards a malicious download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/wix?keyword=csta+sec+2020 PDF link annotation
    • https://gojatoxemoniro.weebly.com/uploads/1/3/4/8/134894745/supupifi.pdfIn PDF document text
    • https://waguxezemi.weebly.com/uploads/1/3/4/7/134703223/2399890.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/2002_lexus_es300_battery_change.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/vagovopilivuma.pdfIn PDF document text
    • http://punejew.mygamesonline.org/99022988587.pdfIn PDF document text
    • https://vafobuzegigotot.weebly.com/uploads/1/3/0/7/130775214/pefigilogifufuk-julobuzepelojan-wusigom.pdfIn PDF document text
    • http://reduslim-shopofficial.site/dream_girlfriend_mod_apk_1._0._36e5zp3.pdfIn PDF document text
    • http://rm-swis-mine.com/kolasajusaguwod2iv3.pdfIn PDF document text
    • https://bafokaxaxex.weebly.com/uploads/1/3/4/8/134881351/barevefepedi.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/xanunafojuloki/8088039095.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/arcane_mage_pve_guide_7._3._5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76894c62-af9c-4ee4-9394-d34beba9692a/pumotakogitomo.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/wigovugisobewina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26441d4a-930a-4013-935b-8c799aba31f0/line_6_pod_xt_live_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efc4b614-201d-4937-a720-f0feab936b6b/2790964353.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/garmin_gpsmap_740s_power_cable.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/90825118405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd8a1d6-f241-4831-b73e-89b7798073fe/64236245331.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 8

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_off0001df5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DF5D 4488 bytes
SHA-256: ad91857544e8294da4973547700589e2e4365a7c6666f436aa7b65f06885e489
font_01_sfnt_off0001ee91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EE91 11424 bytes
SHA-256: 053a67747c093246c8d522aaf0e51fe9919f29f92f5d69c4df4bdaae300e6f33
font_02_sfnt_off00021591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21591 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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