Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ddc5b8ac85b6743…

MALICIOUS

PDF

70.8 KB Created: 2021-02-12 11:02:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5a25f51d993ec0671bc11fda15b7bc28 SHA-1: 68e63947408bd5c64e79094a76e931e53187693a SHA-256: 7ddc5b8ac85b6743c38bc551eefb060c9786f9cf9eac947b3bdfbf235f920874
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 numerous embedded URLs, one of which is directly referenced in the heuristics as an external URI. The document body, though heavily obfuscated, suggests a lure related to 'Sony Xperia manual download', indicating a phishing attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/wix?keyword=sony+xperia+manual+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5fe84f689a6f6.pdfIn PDF document text
    • http://igcopyrightforhelps.com/jivixok5wair.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/hheLgjL/pixel_car_racer_hack_pro.pdfIn PDF document text
    • http://legionmone.xyz/bharathiyar_songs_lyrics_in_tamil5pvgh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375891/normal_5fcc3c619fbce.pdfIn PDF document text
    • http://eurostore.info/39951485508xkjii.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459055/normal_5fff3270ed24f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500904/normal_601a49d72f096.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488092/normal_5ff825da6709d.pdfIn PDF document text
    • http://aarbuz.space/29556357145sjydp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393641/normal_5fd0d92b283ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426814/normal_6017c1073a8e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501996/normal_5fdc895f0f333.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/gidjaFM/93331745336.pdfIn PDF document text
    • https://cdn.sqhk.co/mowasikuso/B15aggu/34876561527.pdfIn PDF document text
    • https://cdn.sqhk.co/wememiguw/0qcijge/cool_phone_ringtone_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/kibedutej/6abAyHB/amazon_music_hd_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382621/normal_5feffe601addd.pdfIn PDF document text
    • https://cdn.sqhk.co/pevukoza/i5ojewP/43011408480.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527237/normal_6012c24adaba1.pdfIn PDF document text
    • https://cdn.sqhk.co/fusaduxuw/Viggiie/46722368846.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD86E 5292 bytes
SHA-256: e3f7190fbdb3aa3727674fcf48eb915437094adcff80daa38e488d33513e0ba6
font_01_sfnt_off0000ea73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA73 10272 bytes
SHA-256: 0863a6dad11c06f652f0bb6da7c3a2454a2e75cc8bd88878c37152a3654fc6f9

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