Malicious PDF — malware analysis report

Static analysis result for SHA-256 50e3edb2e9d922b1…

MALICIOUS

PDF

71.3 KB Created: 2021-02-25 04:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f42d4441f8f0b2c9fbd0f6c31d78e73b SHA-1: b2f169a289513b23d14c2049addb566cee58e17b SHA-256: 50e3edb2e9d922b1262eaa89b47d37cef1c0148f57b8016450bfe28c1cf7fd50
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing content. The document body, though partially obfuscated, contains a lure related to a wireless charger issue, and the SE_CALLBACK_LURE heuristic indicates it prompts the user to call a phone number. Several embedded URLs point to potentially malicious domains, suggesting the document is part of a phishing campaign designed to trick users into contacting attackers.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://jottigo.ru/award?keyword=why+is+my+wireless+charger+blinking+green PDF link annotation
    • https://cdn.sqhk.co/mogizufofuj/iig0iWY/80039519828.pdfIn PDF document text
    • https://cdn.sqhk.co/bowevuva/fgjkBhi/92492387211.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/mjdifih/51962410036.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/Lpivshf/hotels_near_golden_goal_sports_park.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/jgqsZEW/fejixugovatujatawi.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/jet5hcD/strike_force_kitty_last_stand_juegos_friv.pdfIn PDF document text
    • https://cdn.sqhk.co/pisimebuziz/gQ0Zijo/74457294538.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/pggnpRd/britannia_cruise_ship_floor_plan.pdfIn PDF document text
    • https://cdn.sqhk.co/vimitewimuwi/ifDMPoR/duriluzolegibatatijasusa.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/tjaKjfb/moon_asteroid_impact_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/ijfidic/best_id_card_scanner_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/todiwapubu/jArShf6/blank_map_of_england_and_ireland.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/ninasivol/23080950947.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/24611386091.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/lejasatubivataxan.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/joint_health_and_safety_committee_guidelines_ontario.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/97769346773.pdfIn PDF document text
    • https://forums.androidcentral.com/showthread.php?t=927179&s=bfb93ec2a895244ef8f27a2d1baeffbcIn 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
    • https://forums.androidcentral.com/showthread.php?t=927179&s=bfb93ec2a895244ef8f27a2d1baeffbcIn 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_off0000d954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD954 5624 bytes
SHA-256: 344bfcff904b2fc80d4b594749760e12c624fd16fc0ffb21e6b000013c83a0b3
font_01_sfnt_off0000ec6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6C 10460 bytes
SHA-256: 405852d6b4de4bae70e79589ca55f18ef56705bc18f872a503c0e48652928135

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