Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f85d51665ae8918…

MALICIOUS

PDF

71.9 KB Created: 2021-02-13 06:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bf882d80e60b642f0c78b6d680543409 SHA-1: 9cf325d103a75e417eeb38c62f8b07e29331be75 SHA-256: 4f85d51665ae891826569ea3557cb4226ca7cf864a899c538fa8474b94fc132e
116 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, and exhibits characteristics of a callback phishing lure. The document body, though partially corrupted, contains keywords related to an admission form, suggesting a pretext for the scam. Multiple embedded URLs were extracted, indicating potential redirection to malicious sites or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=sainik%20school%20sujanpur%20tira%20admission%20form%202019 PDF link annotation
    • https://cdn.sqhk.co/pivokazi/CVRhfyE/football_coach_2_achievements.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_602204a57099a.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/jdjdggP/halloween_origami_cute_bat.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/haxnFie/47813771749.pdfIn PDF document text
    • http://ek-arenda.ru/rofidawatufusivokuzomd6xl.pdfIn PDF document text
    • http://axecheat1.xyz/shakira_video_music3vodp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413978/normal_5fde6e897a9bc.pdfIn PDF document text
    • https://cdn.sqhk.co/mowasikuso/TXjjNK4/cbs_sports_fantasy_football_running_back_tiers.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxodokoju/9cjchfy/first_aid_for_burns_ppt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454052/normal_60040a8307939.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/cjiqiif/craft_warehouse_framing_coupons.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468837/normal_6021a3f9c7068.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471096/normal_5ff5a8cdda829.pdfIn PDF document text
    • https://cdn.sqhk.co/lodesejidi/Zhhghib/the_elder_scrolls_blades_switch_trailer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453537/normal_6011e682e0a0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474445/normal_6008ec1186069.pdfIn PDF document text
    • https://cdn.sqhk.co/zonurubo/henYjgx/bus_simulator_free_download_for_windows_7.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_off0000d8d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D1 6120 bytes
SHA-256: fd6a556c082ef196dea10904e93c5abace485915567a4f8fbfd35ea168b116c5
font_01_sfnt_off0000ed85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED85 10872 bytes
SHA-256: f903a8872103c08744ff8547c1c1edc2da8032aef30abf34359c9843445ba53c

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