Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a176abac855fac1…

MALICIOUS

PDF

76.0 KB Created: 2021-05-21 15:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ea7d993a5200c9f59f3071cec76f32c7 SHA-1: 521353c709d2942ae0efbe0a7a282759ad6989ed SHA-256: 1a176abac855fac1ef645b03c1cc839caf4f4e3d217b333027e6ed4c4464e8a0
96 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. 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 0.9991

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://pelibifir.ru/strik?utm_term=fundamentals+of+project+management+course PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453551/normal_6043751f9b24d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379374/normal_5ff7744ddfc2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413475/normal_6026d5ade3684.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417824/normal_5fcaed71ec208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418166/normal_604da8ca61842.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fd7cc77-ab91-432e-a447-d057fc524985/kivixiduxiwaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0713511-3f7e-4db7-af09-9b455e3cc828/97481183514.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/best_ps2_emulator_for_android_xda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9765f01-b610-4068-a46b-0ad55b1904d0/what_is_the_meaning_of_the_idiom_dont_miss_the_boat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0a8c2a6-5ea3-41e7-b222-7bbffcfe2860/vamajulotamawolajenokox.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/xelaselomelemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/153afd2e-9771-46a0-a892-97145c73133c/84057267568.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2468100-a8f7-4cfc-8d21-b75ddf985df8/mcgraw_hill_reading_wonders_4th_grade_vocabulary_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6b7c4d4-78a4-4ae2-87e6-b1cfe830df24/mizebonujawijoguwegozaruw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fffa968-57e0-4cc8-8b78-2e68589598fb/what_is_step_5_of_the_accounting_cycle.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/rujijufojojox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0109f64-345e-432d-9678-0c2b95d3893b/kill_kills_process.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/mathematics_10_textbook_mcgraw_hill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d783af43-bdc3-4b58-bacd-f89380a4f571/is_yoda_a_yaddle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/373d3752-9b3f-4329-aaba-8af88bdd89ac/ripabivotebemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00545136-8ac6-43dd-ac03-374eb404111a/63408282604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504e6adb-6061-4d9e-b560-c36f9850aab4/43409911047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd64d157-07ce-47e2-b491-9fd22a17df9b/what_does_the_french_word_grimoire_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9a3e9d7-67a8-4bc5-a8c0-1be2b6328ed6/zugeranoranoj.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8E 5504 bytes
SHA-256: e212d1e09ed282b45e65e2807e2b8a37cd63d9aa7fe135c8bc00b162dc60be1e
font_01_sfnt_off0000fd3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3B 10944 bytes
SHA-256: 73b81f4bcb32b5d0636948fc2525b6e4e3b204b4c028e18f932232a5d411410d

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