Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15578894a198543…

MALICIOUS

PDF

77.6 KB Created: 2021-02-22 14:13:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 02be494f6417296254cd82fa004e052b SHA-1: c8b07e539708d3a3ae1e40fecd86e541b64f4cf5 SHA-256: f15578894a1985436f888fde29761f6a124698760a4dcd07d413d15723b6dc2d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that redirects to a suspicious domain, likely intended to deliver a secondary payload or phish for credentials. The document body, though heavily obfuscated, suggests a lure related to educational material.

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://baarspo.ru/wix?keyword=chemistry+a+study+of+matter+8.6+worksheet+answers PDF link annotation
    • http://helpcontactform.com/stardew_valley_growing_grassf067v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418188/normal_60324a6a92e11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451350/normal_5fe03545b585f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_6030faf272fc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417313/normal_5fdda0995f45f.pdfIn PDF document text
    • https://cdn.sqhk.co/nupumusu/bn1SBsH/pass_with_flying_colors_synonym.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416934/normal_5fee46c625cf6.pdfIn PDF document text
    • https://nefabilaj.weebly.com/uploads/1/3/1/4/131438225/d40208d12461f.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/ckASgh5/51494502564.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/hahcBTJ/34936145226.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/O9rBqid/big_head_soccer_unblocked_shs.pdfIn PDF document text
    • https://cdn.sqhk.co/jemowevu/74hcIhj/mx_player_free_download_old_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422640/normal_6003643d04955.pdfIn PDF document text
    • http://test123test.xyz/44991937017uqzkj.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/31308771374z2jin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wipapirub.epizy.com/gotudebumufite.pdfIn PDF document text
    • http://tatepazutapoz.rf.gd/misevidugusazivagitebora.pdfIn PDF document text
    • http://jajowisomipuw.epizy.com/rewawopewopiviju.pdfIn PDF document text
    • http://balepififeri.rf.gd/hexagon_box_template.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_off0000e65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65B 5660 bytes
SHA-256: 7b40ebd90a4d715cc8d1e83eac63bd9baf356cc6c501fe0f71019e42435cc11e
font_01_sfnt_off0000f98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98B 15424 bytes
SHA-256: fa91f153d6f85cf01a684b214f5a747d72e1a57be653bce058a4af2055abec04

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