Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b3eedc124b7fb26…

MALICIOUS

PDF

73.4 KB Created: 2021-04-02 22:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a9982fa19eb62cb6ae38419e773c777 SHA-1: 6f25a32e181a72d8b65e3acfda4fd62316bc45e4 SHA-256: 0b3eedc124b7fb260974422058fb4d006bca09a630044b33f92eed37847485e9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when accessed, likely leads to the download of a malicious payload. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. The presence of an external URI points to a phishing or social engineering attack vector.

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://ponafet.ru/award?keyword=paulk+workbench+pdf+download
    • https://cdn-cms.f-static.net/uploads/4392451/normal_60464ca994cce.pdf
    • http://zedemotolezipa.22web.org/spinal_anaesthesia_for_caesarean_section.pdf
    • https://cdn.sqhk.co/liripudeb/ifcwFgf/simple_reversionary_bonus_pnb_metlife.pdf
    • https://cdn-cms.f-static.net/uploads/4449014/normal_5fe9e7f5bbd1f.pdf
    • http://gilopenomugo.iblogger.org/mahabharata_short_story_in_english.pdf
    • https://static.s123-cdn-static.com/uploads/4385004/normal_5fe25d0f53c65.pdf
    • https://cdn.sqhk.co/kuzetuzame/j4jhjjG/business_model_canvas_swot_analysis.pdf
    • https://cdn-cms.f-static.net/uploads/4428062/normal_5fdab746022a3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/piradi/how_to_write_a_counterclaim_in_an_argumentative_essay.pdf
    • https://uploads.strikinglycdn.com/files/cbe6dc6b-bcec-4953-8c5c-ba24b5c23335/27885238137.pdf
    • https://s3.amazonaws.com/gifiz/88983145264.pdf
    • https://uploads.strikinglycdn.com/files/af15910f-d813-4c0f-9145-5677fd9eb6eb/shark_navigator_vacuum_cleaner_parts.pdf
    • https://uploads.strikinglycdn.com/files/d8d02ebf-6b19-4f06-9111-469ed39bb943/samsung_dishwasher_mounting_bracket_lowes.pdf
    • https://uploads.strikinglycdn.com/files/8ffb9255-a486-49d8-b71b-2405fc3aeaf3/gusux.pdf
    • https://uploads.strikinglycdn.com/files/a6ef2924-790f-4dea-ac00-ec1da65629d4/zeduzepupagitowepalefig.pdf
    • https://uploads.strikinglycdn.com/files/fcb44430-ab05-4af5-9555-41aafde80318/68197426062.pdf
    • https://uploads.strikinglycdn.com/files/66cae5c0-e8fd-4d7b-b838-7a46a6e15ed9/a_streetcar_named_desire_scene_5_analysis.pdf
    • https://uploads.strikinglycdn.com/files/67e56783-8059-4289-b864-b4e60eb7b951/99035244631.pdf
    • https://uploads.strikinglycdn.com/files/38f3b444-194d-4e1b-9247-dcd65b45fad9/74690931379.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_off0000e136.bin
42311daa3213dd374b64cc6ec111747b70eec86f72267e8d64408ecf4727b065
pdf-font-stream PDF embedded font (sfnt) at offset 0xE136 5360 bytes
font_01_sfnt_off0000f37c.bin
67e59d92a15ff9469b8c5ff81b54e2315508bd54965932ae1faa705cd63d3e1d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF37C 10840 bytes