Malicious PDF — malware analysis report

Static analysis result for SHA-256 53615b4dfb245fcd…

MALICIOUS

PDF

79.8 KB Created: 2021-03-15 13:20:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1aa620899c912af63b6e68947fe34725 SHA-1: ce306de5c59f50c0ae455e7e17efeb3ce96c2982 SHA-256: 53615b4dfb245fcd0dad2a161329d350d84a05afbcc47b0e4f79042c23539fa4
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a resource advertising a "8 ball pool hack", suggesting a social engineering lure to trick users into downloading malware. While no scripts were explicitly extracted, the PDF structure and external URI heuristic suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=8+ball+pool+hack+long+line+apk+latest+version
    • https://cdn-cms.f-static.net/uploads/4402504/normal_601a08896c88e.pdf
    • https://static.s123-cdn-static.com/uploads/4484631/normal_5fcc47262bfc7.pdf
    • https://cdn-cms.f-static.net/uploads/4493578/normal_5fdc88db02dde.pdf
    • http://jelelegukawox.22web.org/albury_tv_guide_thursday.pdf
    • https://static.s123-cdn-static.com/uploads/4471484/normal_5ffa234e33045.pdf
    • https://static.s123-cdn-static.com/uploads/4408718/normal_5fcf24c25134e.pdf
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5fdd5de2cbc3c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_553576a63f184900976198c1acaf5108.pdf?index=true
    • https://fa0867c9-8cf0-46f9-bfae-aad8e49c21f3.filesusr.com/ugd/cdba2c_eb2429b821be42598abbe5058c6c0d47.pdf?index=true
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_08fa08f9d979495fab0999363923568e.pdf?index=true
    • https://s3.amazonaws.com/vososasoxumete/21515020370.pdf
    • http://vefelazubogimew.rf.gd/hp_8625_printer_ink.pdf
    • http://gamupuzif.epizy.com/ketubenuragobisuwoxibol.pdf
    • http://vufuwuxe.epizy.com/how_long_does_it_take_to_say_1100_words.pdf
    • https://12a3aa02-022d-4218-8efb-90aa4388683d.filesusr.com/ugd/6dfd9b_8215006960d1400bbf067ff9c35a4c29.pdf?index=true
    • https://s3.amazonaws.com/satulibaren/fajebegamizonodonefivi.pdf
    • https://fa90eb46-aa9b-4fd1-a2e8-e903ec8e50a4.filesusr.com/ugd/575fb0_5754787a86b44ce796acdb931223138f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9957fa01-51c4-40b4-b1e5-78122d52b25b/physics_class_11_chapter_1_ppt.pdf
    • https://uploads.strikinglycdn.com/files/17625bab-d450-42b3-a0b2-8779e6b0232c/winner_soccer_evolution_full_unlocked_apk.pdf
    • https://s3.amazonaws.com/dazovosugev/sevufeta.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_off0000f193.bin
171602b748aaf88dc4bcbb143ffab61c894ae836eb1db39daac42a43a2b25fc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF193 5556 bytes
font_01_sfnt_off00010478.bin
4507b5f76b9ed70a23bab49aecdf7bced8a77f58c504bb3f37cb7aed89479c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10478 18248 bytes

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