Malicious PDF — malware analysis report

Static analysis result for SHA-256 663408c761659f1e…

MALICIOUS

PDF

74.6 KB Created: 2021-03-24 16:36:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e19a8e4b1e7e4024e30702523d6db133 SHA-1: 73fc81b9b6eb1faa6c74b3044f9325e934355889 SHA-256: 663408c761659f1eb15e071601c028f14fa2edc612e989ec523acd1f4afcd3ea
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a movie, aiming to trick users into visiting a malicious domain. ClamAV and ML classifiers strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/123?utm_term=bhaskar+the+rascal+full+movie++tamil
    • https://static.s123-cdn-static.com/uploads/4408004/normal_5fe22c5cdf33c.pdf
    • https://static.s123-cdn-static.com/uploads/4470540/normal_5ff0719ccfe2f.pdf
    • https://static.s123-cdn-static.com/uploads/4404745/normal_5ff4ad8120aba.pdf
    • https://static.s123-cdn-static.com/uploads/4469641/normal_5fe26e73bdfd9.pdf
    • https://static.s123-cdn-static.com/uploads/4456379/normal_5fed49890b143.pdf
    • https://static.s123-cdn-static.com/uploads/4427529/normal_5fdf4db01c76f.pdf
    • http://boziliruzake.22web.org/meaning_and_definition_of_mathematics.pdf
    • https://static.s123-cdn-static.com/uploads/4451556/normal_5fe4d97e0b4c8.pdf
    • https://cdn-cms.f-static.net/uploads/4384642/normal_6025dec6d2c4c.pdf
    • http://vobuxunulorepi.22web.org/nubazupatavenilakijoxi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://boribasumagit.epizy.com/concepts_of_programming_languages_chapter_9_answers.pdf
    • http://jimugen.epizy.com/ribisesimekuvomapofu.pdf
    • http://suwulinivez.rf.gd/ipcc_assessment_report_5th.pdf
    • http://lidesesepaz.rf.gd/the_election_of_1860_answers.pdf
    • http://kukewipomexineb.epizy.com/android_software_update_samsung.pdf
    • http://wuvasof.epizy.com/38446385034.pdf
    • http://leribilif.rf.gd/26424670770.pdf
    • http://gubowejuxenixu.rf.gd/modet.pdf
    • http://ravexigulot.rf.gd/how_to_fix_kirby_vacuum.pdf
    • http://kujujigufa.epizy.com/nipesigojibuzivoge.pdf
    • http://kekosasokab.epizy.com/39809039349.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e634.bin
c174596e6133f235578da056ce4cb3edda493ead4653999b756a8962fec00c11
pdf-font-stream PDF embedded font (sfnt) at offset 0xE634 5296 bytes
font_01_sfnt_off0000f815.bin
8ac6d1f67742820abbd4211e47b9ef12b9274d319671cb729d89b705bdaab863
pdf-font-stream PDF embedded font (sfnt) at offset 0xF815 10720 bytes