Malicious PDF — malware analysis report

Static analysis result for SHA-256 0712f2c5dcaca163…

MALICIOUS

PDF

81.7 KB Created: 2021-05-31 01:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b809d702090559f486d0b61b25513421 SHA-1: 5a99a79b52ec66060c4496d44ba17acd223e9cb1 SHA-256: 0712f2c5dcaca163b03b6cc1bb2f2b3773ecc3ffc124664a358cd9b8076e1840
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 0.9992

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://baarspo.ru/strik?utm_term=what+do+a+monster+mean+in+dreams+biblically PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454052/normal_5ffaa44a94fa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506170/normal_60598992a9e5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476924/normal_60630040044fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427809/normal_60113bbfee569.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368492/normal_5ffa98d6c570b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416144/normal_5ff210c6461a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417213/normal_5fe40874c0b58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421614/normal_6065de218a7bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_5fd7b446b8dca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389387/normal_605093a15ef98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_5fd704d220eff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5fd77281d748a.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/82d7b68a-8631-4bbb-8b7b-83a331dec0cf/52250564768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66985cc9-bfe9-40ad-a0e6-d8d206e2aa1e/juegos_de_cinematica_fisica_para_hacer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a78aba1a-f145-470b-905b-cd928cf61ba1/str_dh130_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cbbf69e-de2f-42e6-af60-ece54979cce2/first_data_fd410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9d79e92-fc82-49f3-ad15-b5193afc8feb/65342728607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a74b5211-5ff5-4dd4-9b66-6973d587b63f/30298595523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a46367d3-7a4e-468d-a168-3f124066e891/nivaxegi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2b96a01-890e-454a-9cfb-af9621040979/wivimanivipezowanow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6db382eb-479f-4dbf-83b7-d1e40f11f2c0/awaken_the_giant_within_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce5bcd16-480f-41a1-9fb7-e1ecf5d6e765/komopuzez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3367a756-d86f-4bbf-817b-d15ba90584a2/88827093674.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_off000101c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C8 5436 bytes
SHA-256: 5f35e4d8c6e82ff4b67306da03f296008f96087f7db8f2d1bd50a47975346891
font_01_sfnt_off00011428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11428 10876 bytes
SHA-256: 60494e5a92bc72792414250e81cca712f791835e73240c35a18ffc7d4fbf833e

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