Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c41db18b503cba…

MALICIOUS

PDF

61.9 KB Created: 2021-02-07 11:12:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a919405c871b235cde397bdd20282db8 SHA-1: a4e3f4404670ca01ab6d68b46e2aa90be37675ce SHA-256: 03c41db18b503cba654235b2e85dde41b7761343adf03aa62843ade968507e11
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://maypoin.ru/123?utm_term=sip+of+stamina PDF link annotation
    • https://cdn.sqhk.co/fofesali/aogd1ia/gezebugege.pdfIn PDF document text
    • http://islandlandscapesbb.com/34156710042m20u0.pdfIn PDF document text
    • http://pinerapidsrr.com/tap_titans_guideztg1w.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/cIjfhcr/flappy_bird_death_toll.pdfIn PDF document text
    • https://terodovob.weebly.com/uploads/1/3/0/7/130776228/doxezovomotolepaso.pdfIn PDF document text
    • https://valuzobuxile.weebly.com/uploads/1/3/2/7/132711949/1502983.pdfIn PDF document text
    • https://togezajotutev.weebly.com/uploads/1/3/0/8/130874352/vinuruku.pdfIn PDF document text
    • https://cdn.sqhk.co/fekesolip/jsOgePk/vampires_diaries_netflix_france.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://robowogutalopet.epizy.com/animal_crossing_new_leaf_ocean_fish_guide.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_off0000b53b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB53B 5020 bytes
SHA-256: 375f247cc3b4370b3ad8fe20b18bdd6291d304a800ee445fd86199987f31bf14
font_01_sfnt_off0000c64a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC64A 10928 bytes
SHA-256: 5fb85de010d5486fcad6924e239e33b9f288350baf3c9ed7e6b558998822fa5a

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