Malicious PDF — malware analysis report

Static analysis result for SHA-256 61fcfc14681a0644…

MALICIOUS

PDF

93.2 KB Created: 2021-05-18 19:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c58548a68e090734b46bf5d59b14b85b SHA-1: d67b82bc55311d12940c355ebe2a033cb58d36ef SHA-256: 61fcfc14681a0644b8bc7c207c28da9beff81c9a1d81305c8cf7386cd097922c
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 0.9998

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://jottigo.ru/strik?utm_term=how+to+load+a+bostitch+antimicrobial+heavy+duty+stapler PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411231/normal_604a9f0b40db4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405644/normal_6027fe4e88394.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420031/normal_6030633cba9f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_604b86b6b80be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446170/normal_5ffe427ef1823.pdfIn PDF document text
    • http://jekebes.iblogger.org/ameloblastoma_mandible.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489835/normal_60674b39be95b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463010/normal_5ff4aeb058076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473052/normal_6055b1c642b40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470231/normal_5ffc01866f732.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/dutuzanob/xumaroze.pdfIn PDF document text
    • http://pivinonakit.rf.gd/38548596926.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/zivikinap.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/can_airpods_connect_to_android_tablet.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/16820858063.pdfIn PDF document text
    • http://mowiweret.rf.gd/4314211571.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/navy_basic_training_packing_list_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80e9b25c-38a5-4603-af0d-6474c018c1c7/xidakajixoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8c79fb3-ade1-4b1a-987c-46dfe758a24a/stephen_kings_it_2.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_off00012a9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9B 5668 bytes
SHA-256: 90cc7f5b5f140a84a0c2706cd7ff3744ad03211c08dc314b0ebc0aeacf335c3f
font_01_sfnt_off00013dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DCA 12040 bytes
SHA-256: b592c34796aba829bf35f1b2a05637daaf8d3129843ae9e17c8a5a2eeea0869e

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