Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d21ee46d5fba3c1…

MALICIOUS

PDF

72.7 KB Created: 2021-02-24 22:10:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75b7ee48264f7d5a241b28454fe88b18 SHA-1: 17fce89f7ee2f3bddc311ec5d912cd6853a99517 SHA-256: 2d21ee46d5fba3c1c05d2ba6c5bcc5f276c59cace59b6d2fd78ea7f42c6c023f
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and numerous other suspicious URLs suggest the document is part of a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=the+success+system+that+never+fails+filetype+pdf
    • http://static-start.top/29931609657yyjcy.pdf
    • http://akfb.online/artstudio_pro_brushesnfzjp.pdf
    • http://harkateine.fun/26488015568pphdo.pdf
    • http://leaninrzpd.site/animal_crossing_new_leaf_guide8i0cl.pdf
    • http://unlockdeals.shop/50076709847oqum.pdf
    • http://fito4ka.xyz/flowers_for_algernon_short_story_review2eozg.pdf
    • https://xuwovovap.weebly.com/uploads/1/3/1/6/131607152/zaravegode-nitam-vidokoxaxeta.pdf
    • https://static.s123-cdn-static.com/uploads/4446395/normal_5fe49017d573d.pdf
    • https://static.s123-cdn-static.com/uploads/4419836/normal_5ffc922506f4d.pdf
    • https://cdn-cms.f-static.net/uploads/4365657/normal_601392ff40524.pdf
    • https://cdn-cms.f-static.net/uploads/4476939/normal_600ebf513f8b7.pdf
    • https://safejabev.weebly.com/uploads/1/3/0/7/130739713/7893259.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0da.bin
94faa6bf2ad862490a603b3958871816a1122cdbfd08f0b6a029f4e946a06e0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DA 5508 bytes
font_01_sfnt_off0000f379.bin
6e75915958d9daee78be0f67684e211bef18ccacfdd58ffbf1765a1305ffb8fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF379 10052 bytes

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