Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19fd277b2aa6f83…

MALICIOUS

PDF

94.0 KB Created: 2021-03-05 12:52:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 01ec35760e03d1164bec93c915620874 SHA-1: 0c1bd44f7dde3751df40e9fb972dd852080a120b SHA-256: c19fd277b2aa6f8331226a83ff330b1a12053f4c78605008577e906ebb89ca1f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to trick the user into visiting a potentially malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to academic or informational content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://nipisod.ru/award?keyword=what+is+meant+by+habitat+and+ecological+niche PDF link annotation
    • https://nusutaligufobam.weebly.com/uploads/1/3/5/3/135393176/xibuwibepogufiv-vakaxurijatevor.pdfIn PDF document text
    • https://pugotaba.weebly.com/uploads/1/3/5/3/135302821/2f3ba2bdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469135/normal_5fe1912929797.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369907/normal_5ff3eeead92e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444098/normal_5fe4dc63c7715.pdfIn PDF document text
    • https://segunimumise.weebly.com/uploads/1/3/1/0/131070895/mafumirudu_zopun.pdfIn PDF document text
    • https://zewurutivuzaned.weebly.com/uploads/1/3/4/8/134888434/9e4844724e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374703/normal_6018bbbf02f88.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://uploads.strikinglycdn.com/files/67eea456-d139-41d8-b323-f6a359711ca6/48649405385.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/difodapofafisijilakivabet.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/60475352443.pdfIn PDF document text
    • http://tinanatibora.rf.gd/anime_tv_app.pdfIn PDF document text
    • https://45ed8376-e832-497f-ab20-0a31924dc5db.filesusr.com/ugd/4b7290_495fd6018a1c4b04a29e20c986533f79.pdf?index=trueIn PDF document text
    • http://fanutebuxus.rf.gd/the_natural_rate_of_unemployment_changes_when.pdfIn PDF document text
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_c1c9a8e0a58749fd9fa4c53abe9be0b9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa0654d-6886-4a3a-86cb-370564688f34/73606067366.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/journey_to_the_center_of_the_earth_1959_gertrude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd36fd0-e490-4381-9ded-5e6193929b60/puvek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad2ad094-b514-43a1-96ea-fd9e1887f8b8/ford_mustang_gt_2017_specs_0-60.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/62640506591.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/kogokanefagejefusa.pdfIn PDF document text
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_2c6e07670d574d328ce947408bdaf80d.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12710 5300 bytes
SHA-256: eb9519cbd0bf7008140616e299ac9ce5a5081622d7fc7bbccf16fa17e40c86f6
font_01_sfnt_off000138fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138FC 10272 bytes
SHA-256: 1fba1dde29046e0d2d52f440028c855ec37bcdd94a9255e36f181a07fb146a92
font_02_sfnt_off00015c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C14 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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