Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ea58a881858a4c…

MALICIOUS

PDF

75.6 KB Created: 2021-01-19 17:02:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8d9807580e3c05d806246d5ac6b74408 SHA-1: 6c2f91f3f0cdab5319172eb162dd932157dc3601 SHA-256: b9ea58a881858a4cee12d4a8f277f058de0154241e8a3c1f963cd781f8e79db4
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 URL pointing to 'trafftec.ru', which is likely used to host a phishing page or download further malicious content. The document body, though heavily obfuscated, contains references to 'budget forms pdf' and the wkhtmltopdf tool, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://trafftec.ru/aws?utm_term=budget+forms+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409258/normal_5faed779e3e7a.pdfIn PDF document text
    • https://cdn.sqhk.co/xibumediw/3ohj0hf/58157306071.pdfIn PDF document text
    • https://cdn.sqhk.co/tudifemumopi/chbhbhf/zefipox.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/jihjCjh/ninja_raiden_revenge_mod_apk_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f879a1a1cba0.pdfIn PDF document text
    • https://site-1221793.mozfiles.com/files/1221793/what_is_categorical_data.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/gjgchiZ/13041568226.pdfIn PDF document text
    • https://site-1171568.mozfiles.com/files/1171568/minecraft_java_edition_for_windows_10.pdfIn PDF document text
    • https://site-1168112.mozfiles.com/files/1168112/rufinoxinuzisojopixu.pdfIn PDF document text
    • https://cdn.sqhk.co/xomorenut/9tIbbuw/spacebar_counter_challenge.pdfIn PDF document text
    • https://site-1178527.mozfiles.com/files/1178527/kobotafoxukekosivowiref.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380691/normal_5fe1c98117695.pdfIn PDF document text
    • https://site-1171649.mozfiles.com/files/1171649/xefafakefafuzuzunazarat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448547/normal_5fa392480f3c6.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/ijN0vVd/money_maker_soccer_tips_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449599/normal_5fbe24f3148c8.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
    • https://s3.amazonaws.com/tuzamada/can_you_escape_level_6_solution.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/4824756051.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/ronivanosoporuta.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/57513276548.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/40610581786.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/losagikud.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/esmo_guidelines_extranodal_lymphoma.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_off0000dfb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB9 4896 bytes
SHA-256: 1d03b8f6d43f8bc93d712e2243457723f537ce86535f4ce186162daf3648266f
font_01_sfnt_off0000f06c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06C 10172 bytes
SHA-256: 68140b99f45d0cb657703f980dcdc8c95504e13c22ec4b3aa203fdd133ae7a12
font_02_sfnt_off00011319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11319 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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