Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcb1551a8c3d417e…

MALICIOUS

PDF

75.0 KB Created: 2021-06-13 09:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 22add9560fd3f77aa3b5d5698ebeb2f9 SHA-1: 0eec84373d7758eebc87b8c4df29c7cc2aabcddd SHA-256: bcb1551a8c3d417ea67092ad67be45dd2d9b125e548f582320ab2ff047c973c7
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating a high probability of malicious intent. It contains an embedded URI pointing to 'drafthe.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a book summary, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://drafthe.ru/pbw?utm_term=the+ways+we+lie+by+stephanie+ericsson+summary PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387701/normal_5fcfe5820b619.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477649/normal_60be4caf78f3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485810/normal_601ccab2cc9ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382643/normal_601330e63b453.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478430/normal_5ff1adc42932d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401972/normal_5fe5e63262172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427287/normal_60641e1661c0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448720/normal_5ffb586d9b123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_6052f7e44c9be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499002/normal_604d089399f44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454161/normal_5fdf85e0a4b53.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kevukimugo.pbworks.com/f/zagokazebatodenik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de7687eb-caf8-4257-ac5f-72a21be7f8c7/can_you_put_vicks_in_vaporizer.pdfIn PDF document text
    • http://vesusezipuwe.pbworks.com/f/24136216926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/044fb5b5-b332-47a3-8cfc-62ab9b5ffc3a/how_can_you_show_patriotism_and_nationalism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7eb1b18-2262-42b1-a8e0-18925d89de47/chortau_dual_dash_cam_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b152aa31-4b08-45b3-9e53-2ab96c0df3ae/do_you_really_feel_the_way_i_feel_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a1e60a6-f531-4519-879d-bb9bb421d6a4/53202011150.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_off0000e605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE605 5456 bytes
SHA-256: 52a74e7dc79e53e09b4de373936b4f070d97b9b6b3e8d336737ad17256bc3fae
font_01_sfnt_off0000f87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87C 11956 bytes
SHA-256: f5fec6388fc76c9f38e8c15c5f12ccf00407945b25df068c17c9a56d3653eb2b

Open this report in the interactive analyzer, or submit your own file for analysis.