Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9234e36805f675b…

MALICIOUS

PDF

69.5 KB Created: 2020-11-24 03:39:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 93316189d693f9117320a513afd74559 SHA-1: 7843c87e1b0bac026024940de1cf79c8b9f6c657 SHA-256: f9234e36805f675bfc73347cdabf5bc425e2faa4dc7096d1d502f7f0cd4e199b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. An external URI, 'https://traffset.ru/aws?utm_term=bicycle+thieves+malayalam+movie++masswap', was extracted, suggesting the document's purpose is to redirect users to a potentially harmful site. No scripts were extracted, but the presence of an embedded URL and the overall malicious verdict point towards a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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://traffset.ru/aws?utm_term=bicycle+thieves+malayalam+movie++masswap PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f900b2615f7e.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/4867245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450353/normal_5fa0a0ce7d860.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/jikorisokoxuwuvog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/63767916092.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/99571028293.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/meaning_of_yellow_card_in_soccer.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/28396731988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e8df85b-18f3-4910-a9ad-ff0eea63b775/98215415162.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB002 5060 bytes
SHA-256: 4d88aa28288ad084a47e585476d214a856287218857f2e4f39cfc7e90d1c2dd8
font_01_sfnt_off0000c152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC152 10444 bytes
SHA-256: 7dd1f4fa1a151a86ec0e67d70bb9cecf784b69e76c44128a0077c95f7e6c130b
font_02_sfnt_off0000e56a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56A 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off0000fa7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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