Malicious PDF — malware analysis report

Static analysis result for SHA-256 39df520011da0354…

MALICIOUS

PDF

80.9 KB Created: 2021-01-25 13:33:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: da0ec3729b2fa8a923eb47dd2d29d53f SHA-1: e691511573f07f5dfa0ba8057d15118909b5247c SHA-256: 39df520011da03540b429e1a19a19dcba58b706d5a070aea31b7450bedecac14
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://traffnew.ru/aws?utm_term=bootstrap+signup+form+w3schools', which is likely a phishing lure. The document body, though heavily obfuscated, suggests it may be related to signup forms or technical documentation, further supporting a phishing or social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=bootstrap+signup+form+w3schools PDF link annotation
    • http://megazoni.iblogger.org/eyewitness_news_3_philadelphia_reporters.pdfIn PDF document text
    • http://wusodopepufex.66ghz.com/10104214210.pdfIn PDF document text
    • https://girosiwubu.weebly.com/uploads/1/3/0/7/130740458/vefupibexoxewuxude.pdfIn PDF document text
    • https://pobapuzelikawe.weebly.com/uploads/1/3/0/7/130739661/635235.pdfIn PDF document text
    • http://lefefegibilapo.22web.org/pepejewejos.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
    • http://jatujij.rf.gd/behringer_umc404hd_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/ansys_hfss_installation_guide.pdfIn PDF document text
    • http://kagiwabiluwotel.epizy.com/kugusumome.pdfIn PDF document text
    • http://mulunatebena.epizy.com/wevulesilu.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/inorganic_chemistry_communications_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/letter_to_santa_template.pdfIn PDF document text
    • http://pepebejawu.epizy.com/66265561248.pdfIn PDF document text
    • http://topuwagib.epizy.com/31015128073.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/laptop_video_calling_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/welopowafiramu.pdfIn PDF document text
    • http://subedawulowuwo.epizy.com/intravenous_fluid_therapy_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/jadamubis.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/bubble_shooter_genies_mod_apk_revdl.pdfIn PDF document text
    • http://bosulug.epizy.com/meditations_in_an_emergency_free.pdfIn PDF document text
    • http://noxikemudenuma.epizy.com/livirojedetolovan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3C 5500 bytes
SHA-256: 6f2d968bef52bd6b795176e8298a258e92dff081510a7d68d327de11a99d36d5
font_01_sfnt_off000100d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D7 12064 bytes
SHA-256: 1ed31e49edc0fc87df8ef0e855a92a59c37a930889c476f2e2de3d7f2179601b
font_02_sfnt_off0001279d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1279D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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