Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ce99cb98a39a8b…

MALICIOUS

PDF

71.9 KB Created: 2021-03-28 11:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b9f8054cde83df501be2e836a14f9ded SHA-1: 5d8d9c905d3b7ceccdebba826e57e6f210b24590 SHA-256: f2ce99cb98a39a8b3015586dd1e5ff1be43f0f046afbcf70bf6f2ec76b1e2e62
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 0.9993

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://mezovuduw.ru/123?utm_term=titratable+acidity+definition+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416805/normal_5fd7161867cc1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493227/normal_5ff2fc233c4b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379371/normal_5fc875156ab92.pdfIn PDF document text
    • https://cdn.sqhk.co/dozirerom/QWYagc7/financial_times_group_subscription_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401983/normal_602d3eff72ad4.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/PligBhY/58407956640.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458145/normal_60350075560ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468837/normal_5fe0bc5e0a579.pdfIn PDF document text
    • http://pifopusilegazo.iblogger.org/11024875212.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426823/normal_5ff370434d1fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418367/normal_5fd1d223c3b60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407983/normal_5fd8324c1e06e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489846/normal_6008e5456b132.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bd04a250-715b-4db0-8087-55ec2f714cf5.filesusr.com/ugd/0c2191_dcf352c60f034518a32ac505329d3f78.pdf?index=trueIn PDF document text
    • https://0a01f052-6ee6-4bfa-868d-d2e49373b03f.filesusr.com/ugd/55f640_7eace1ae510248be950b6671b077f47b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujodibu/hansen_econometrics_exercise_answers.pdfIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_2a84920fc9a847e184e951ed0fba39fe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/todujomogivegup.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/27719124780.pdfIn PDF document text
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_a62b1064c6034eebb92b57003a140cf6.pdf?index=trueIn PDF document text
    • https://315736c7-1030-4200-8d24-05c9f4951019.filesusr.com/ugd/d19ca0_e353299631ad4eb7aa6c1713251c705d.pdf?index=trueIn PDF document text
    • http://zezilometup.epizy.com/47955015676.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/maths_calculator_paper_2_answers.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_off0000dbaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAA 5160 bytes
SHA-256: ab69224e9f0769c34f1bc2de38fd907a0b08e5587ab627dbd35a3b5181dbbca4
font_01_sfnt_off0000ed4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4A 10752 bytes
SHA-256: 098d852c1d437894077efccaeaf4843556335e737fe2734f2b97801bb35d0075

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