Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72872baab57a736…

MALICIOUS

PDF

80.9 KB Created: 2021-02-17 02:06:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 66fddfd141f38faed2bc06123432262a SHA-1: 53c448cb543f632b7aba29abb0d960ac75ad7b18 SHA-256: e72872baab57a7360ff94ad134fd55a15c14ecb02fe498f5c7ac7c411fc9a039
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://seumenha.ru/wix?keyword=haley+and+nathan+get+divorced PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425726/normal_600c7bb17c6c4.pdfIn PDF document text
    • https://cdn.sqhk.co/mejiwimuza/kjfJTk3/skipping_rope_fitness_routine.pdfIn PDF document text
    • https://cdn.sqhk.co/foseziwate/XifERYN/bemovi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448986/normal_5feccd7013526.pdfIn PDF document text
    • http://sodiwemewobigi.22web.org/cat_wala_game_karna_hai.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420431/normal_60213ffae1d32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_601a2045483e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470035/normal_601dc94203592.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494432/normal_6001e3a995e6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372707/normal_5fcf43e67fb7c.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/ibjegcR/ghosts_of_mars_2001.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370097/normal_5ff84e1e6b292.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424682/normal_5fc944a4a0517.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470687/normal_6025ac06c266c.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/nutanigonu/dekuvizobikunar.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/history_of_computer_hardware_reading_answer.pdfIn PDF document text
    • http://verirajoxa.epizy.com/read_books_online_free_without_ing.pdfIn PDF document text
    • http://mujofekiroteped.epizy.com/xomixijoxatefuvitir.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001007d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007D 5144 bytes
SHA-256: df2e65f2a05827c323106041e76f983bf818534395157500f3f7ec4067da4afd
font_01_sfnt_off00011208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11208 10820 bytes
SHA-256: c16a1607222ec75e86ae8d93849ac2a2fbb138fbd5bcc772bfa0317525684d54

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