Malicious PDF — malware analysis report

Static analysis result for SHA-256 f55a23bb28b47869…

MALICIOUS

PDF

85.1 KB Created: 2021-03-03 16:56:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 22e6fb32f22f97e76e67ff7a35ec19fc SHA-1: 1414453e3b7bb306e47558ce63231281ff2b308e SHA-256: f55a23bb28b4786924df02d16102a21aca98bdb0697e1398a554c14f63dd8b87
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, indicating a phishing or trojan threat. The document body displays a deceptive 'Hotmail message has no content' lure, which is a common tactic to mask malicious content or exploit. The presence of numerous external URLs suggests an attempt to redirect the user to malicious sites or download further payloads.

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://bologen.ru/wix?keyword=hotmail+message+has+no+content PDF link annotation
    • http://kofojoxake.mygamesonline.org/what_is_the_symbol_for_wind_on_the_weather_channel.pdfIn PDF document text
    • http://x-bionic.shop/blackmail_odia_movie_hd_videov8tdx.pdfIn PDF document text
    • https://cdn.sqhk.co/fasixazijaz/dzMjint/78976726102.pdfIn PDF document text
    • http://pmaider.com/palawarusomuxoka7yra5.pdfIn PDF document text
    • http://pexawegowe.mywebcommunity.org/potukomadasani.pdfIn PDF document text
    • http://7lessons.site/free_template_for_flyers_microsoft_wordfl5tf.pdfIn PDF document text
    • http://vezerfa.xyz/40727703397t6eor.pdfIn PDF document text
    • http://fudoviwil.mywebcommunity.org/how_to_make_cajun_chicken_pasta_in_instant_pot.pdfIn PDF document text
    • https://xalojuxovev.weebly.com/uploads/1/3/0/7/130774978/sevezibobof_bijonizamoror_vulivu.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/q58n9ge/mikutagokiwakazixuxav.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/fetakulebinepazesugisetog645m3.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwinoxaxava/jhCQ1jd/film_review_in_the_heat_of_the_night.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/vezumobigodub/kodunizuvubawoxebugusop.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/50562729121.pdfIn PDF document text
    • http://tofujuwo.onlinewebshop.net/bowflex_pr1000_workout_app.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/27650486197.pdfIn PDF document text
    • http://zotubune.myartsonline.com/bijilubolaseka.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/vidawijizezef.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_off0001044b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044B 4864 bytes
SHA-256: e530f7a170e58566c12bfeea7b41d110de071d1fe1558eff88e184d1b282cdb9
font_01_sfnt_off000114a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A4 10660 bytes
SHA-256: 5a2eae5752f448c0528e61ca766245bfad75514d463d15e27f39361ef6953b23
font_02_sfnt_off0001390a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1390A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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