Malicious PDF — malware analysis report

Static analysis result for SHA-256 b700a4113784a598…

MALICIOUS

PDF

66.5 KB Created: 2020-11-24 19:03:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: de5201bb901aef00b7b73423c9e3bcfa SHA-1: 1faaf47b23e108d2f6396028f476bcff90171fd0 SHA-256: b700a4113784a598102f1394767376c95ca2e3acea845562c3e80aebc44ba2d1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URL pointing to 'traffking.ru', which is a strong indicator of phishing or malware distribution. No scripts were extracted, but the PDF structure and external URL suggest an attempt to redirect the user to a malicious site.

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://traffking.ru/123?utm_term=newell+elementary+nj PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389606/normal_5fa581dc1f711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417429/normal_5faf004122a57.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/lotibabakuj/xarirodazesosiluzizopel.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/kansas_state_learner_s_permit_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5501e34b-9a3b-47ca-bb02-bed090d66188/bakareja.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/autarchia_fascismo.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/amd_high_definition_audio_device.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f278e0d-23b2-4c96-b62a-3638dfa8e5ce/stihl_fs_45_trimmers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57e86cba-7c30-43b3-8dfa-8268e1aca64b/26165463516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7a898e5-0851-4cb7-ab0a-d509a8749aa6/topop.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/mulewudibagaxepumiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dce03501-662c-4145-8f2d-7bccb40ef7cc/sosawaboledajiben.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/238e4e70-1dcf-4aa9-9cb3-9e7df2e4a62b/frozen_fever_full_movie_download_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/migazarejut.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB33A 4892 bytes
SHA-256: f2a83631e95c572da3f737d36ca7d66f78f08b35652b16b478fa39be4f0e5f1e
font_01_sfnt_off0000c3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E0 10692 bytes
SHA-256: c3c3e3c24ced141e3185924bbfbbf292e07c8b5d380b6f17721e8935e3fd143a
font_02_sfnt_off0000e7dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DD 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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