Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b6da61119ddac26…

MALICIOUS

PDF

101.0 KB Created: 2021-01-23 01:01:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 83351f6e5b68f6753164722b2099f074 SHA-1: bf71c56bf254c6b063e5fb79629dd44d51398b10 SHA-256: 0b6da61119ddac260a6b63ae500e8551881ab6c7f4dc16cc1d707c25b4aeb93b
172 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a phishing lure, specifically targeting MFA or one-time codes, and includes external URIs. The ClamAV detection and ML classifier strongly suggest malicious intent. Although no scripts were extracted, the presence of external URLs and the phishing lures point to a likely credential harvesting or session token theft attempt, possibly delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/123?utm_term=brinks+keypad+door+lock+manual PDF link annotation
    • http://wokulorumal.iblogger.org/symmetry_maths.pdfIn PDF document text
    • http://vizilamu.22web.org/lagu_breathe_lee_hi_english_version.pdfIn PDF document text
    • https://site-1177405.mozfiles.com/files/1177405/smedley_mastery_charter_school_uniforms.pdfIn PDF document text
    • https://cdn.sqhk.co/samidabaxik/eZ4gdge/nejij.pdfIn PDF document text
    • https://site-1174278.mozfiles.com/files/1174278/scorpion_mk11_wallpaper_cave.pdfIn PDF document text
    • https://cdn.sqhk.co/gokitoser/Ehggq5W/spinach_artichoke_dip_recipe_without_cream_cheese.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/giRiejS/27411072953.pdfIn PDF document text
    • http://niwapona.iblogger.org/use_usb_wifi_adapter_android.pdfIn PDF document text
    • https://site-1171656.mozfiles.com/files/1171656/golodadeb.pdfIn PDF document text
    • http://bilapak.66ghz.com/47072274132.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/megelugik/loan_agreement_template_free_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/order_of_rotational_symmetry_worksheet.pdfIn PDF document text
    • http://gagisejokunego.rf.gd/bullfighter_strain_information.pdfIn PDF document text
    • http://gesesasogibigaw.rf.gd/aladdin_movie_2009.pdfIn PDF document text
    • http://zugiwonurubenaz.epizy.com/mana_desam_bharatha_desam_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/vebibukubenujunar.pdfIn PDF document text
    • http://fufabufitilaf.epizy.com/dudedaruradilijatokume.pdfIn PDF document text
    • http://ligumawi.epizy.com/12457862324.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/aftermath_2014_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/73169174236.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_off00014f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F17 5436 bytes
SHA-256: 345187e7015b8172df6c755698d66602356b40d096494307d29b60bb5787f62d
font_01_sfnt_off0001618a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1618A 10760 bytes
SHA-256: 445a287dde0cef920a7c03089a3454706e91120d30bf739ce77b3bb5c01dbeb4

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