Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d855a2de323ae4…

MALICIOUS

PDF

73.3 KB Created: 2021-03-27 10:45:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d0482a67d84cffd088cb6258daf0d36 SHA-1: 786557f40199fa17b582b5afd9261706911e33bb SHA-256: 75d855a2de323ae4c0f6411002f06e96ad16526ca0cb9d43c37ef9576e0cdd58
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a malicious domain, likely as part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure for a forklift manual, suggesting a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/wix?keyword=toyota+forklift+owners+manual+download
    • https://jabelobiwisaga.weebly.com/uploads/1/3/1/6/131636903/voguxofotux_lejodixajor_dovujagabamo_geriwave.pdf
    • http://mobeditobaxul.scienceontheweb.net/72567033730.pdf
    • http://b0xberry.online/pre_k_weekly_homeworkc8u9k.pdf
    • http://ihsteam.ru/satamorefowipemobanigikewlp83p.pdf
    • https://gatimosuxanad.weebly.com/uploads/1/3/2/8/132814295/3143162.pdf
    • http://digitalmicroteter.xyz/graco_x5_sprayer_cleaning3qqmy.pdf
    • http://jakartapro.xyz/11662163772u638n.pdf
    • http://pewekelexu.mygamesonline.org/vususa.pdf
    • http://gadetebes.sportsontheweb.net/lasamafedatumi.pdf
    • https://pewovejike.weebly.com/uploads/1/3/5/3/135319851/josubakuzuzilopu.pdf
    • https://bepikasubezitix.weebly.com/uploads/1/3/4/3/134325559/770c9f92cf3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/484b8add-d173-4f9f-aec0-c4b3300d3102/berarorojin.pdf
    • https://s3.amazonaws.com/fuzafuzeruwit/english_phonics_flashcards.pdf
    • https://uploads.strikinglycdn.com/files/0fd03ee7-336a-4c6e-9fcf-09ee8a845389/80909087300.pdf
    • https://s3.amazonaws.com/visagogijulep/22435207337.pdf
    • https://uploads.strikinglycdn.com/files/2b0d7f4d-5f63-441d-99cb-a050aade20b8/85585613432.pdf
    • https://s3.amazonaws.com/tabobujimo/brene_brown_ted_talk_empathy.pdf
    • https://s3.amazonaws.com/jopomodilamego/manualidades_con_papel_mache_para_navidad.pdf
    • https://uploads.strikinglycdn.com/files/50e9e218-955e-4b83-9a50-875fb1f0da0b/old_school_rap_1980s.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_off0000e308.bin
277d8387457f72b01db6f283bbc57fb2b165c915f0721bd42a67780468140383
pdf-font-stream PDF embedded font (sfnt) at offset 0xE308 5260 bytes
font_01_sfnt_off0000f4f6.bin
33f066f2f81e0a09bbffa336343f26b92e10de88668cf4c8b383054f5287d4bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F6 10272 bytes