Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5897a9f4fcbe6c…

MALICIOUS

PDF

75.2 KB Created: 2021-01-10 02:31:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4f46c30f78270e6755a6612eac15de53 SHA-1: e1990fce925ebc378b3ef6e7b39299e7906a42a1 SHA-256: 2e5897a9f4fcbe6ceff894562e05e9db82a3e94fd0154728a34e95fe9fd55515
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that, when visited, likely leads to a malicious payload or phishing site. The document body, though heavily obfuscated, suggests a lure related to medical guidelines, aligning with common phishing tactics.

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://traffnew.ru/aws?utm_term=cholesterol+treatment+guidelines+chart PDF link annotation
    • https://site-1178488.mozfiles.com/files/1178488/noxotetalumikega.pdfIn PDF document text
    • https://site-1174958.mozfiles.com/files/1174958/simple_model_release_form_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/bowewulaxam/ftieZhf/33589738628.pdfIn PDF document text
    • https://site-1178425.mozfiles.com/files/1178425/arduino_cnc_limit_switch_wiring.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373297/normal_5fcda6828e6c7.pdfIn PDF document text
    • https://site-1174029.mozfiles.com/files/1174029/strike_fortress_box_battle_royale.pdfIn PDF document text
    • https://site-1172862.mozfiles.com/files/1172862/zeweji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_5fa7e4c748b37.pdfIn PDF document text
    • https://site-1180454.mozfiles.com/files/1180454/89587948617.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fapaga/audi_dealer_locator_india.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/lusapotivuvikevotewufiti.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/microbial_growth_and_death_kinetics.pdfIn PDF document text
    • https://s3.amazonaws.com/wejalixex/j_wallace_james_school_supply_list.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_off0000e922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE922 5260 bytes
SHA-256: 8dad89b02735e78be168873eb2eeb9dddd0be246564cc65ab487ff69c2875595
font_01_sfnt_off0000faca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACA 10796 bytes
SHA-256: 6d4aca056059ceeb42a6e39407bb61a9a8304f27a0fce219b392021e56b8d57a