Malicious PDF — malware analysis report

Static analysis result for SHA-256 805375c473efd875…

MALICIOUS

PDF

81.4 KB Created: 2021-03-06 17:53:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b819b51dc92fbe03cff69c0fea4b3ee1 SHA-1: 29d7c214c809dde68a2ea3a98ae5679f963de05d SHA-256: 805375c473efd8759b06dd4fcbee6557cdd147d0cc0cf3ce7109eaeaf87d005a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious URL, likely intended to trick the user into visiting it. The document body, though heavily obfuscated, appears to be related to the URL's query, suggesting a phishing lure.

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://leonvi.ru/wix?keyword=twilight+zone+escape+clause+imdb
    • https://cdn-cms.f-static.net/uploads/4392195/normal_5fdbc5d9b4c89.pdf
    • http://tijudozi.scienceontheweb.net/rofamujiluvopoximejoli.pdf
    • http://gegejobusi.22web.org/pokawukaletetewodo.pdf
    • https://static.s123-cdn-static.com/uploads/4415292/normal_5fe52ca12304f.pdf
    • https://ludiwutigavas.weebly.com/uploads/1/3/4/6/134697468/2563322.pdf
    • https://cdn-cms.f-static.net/uploads/4368477/normal_6033e20a873ed.pdf
    • https://fazijexin.weebly.com/uploads/1/3/2/7/132741066/duronevimasega-lubuzisitelajig.pdf
    • http://sazulido.medianewsonline.com/rotasuwefawubakom.pdf
    • https://cdn-cms.f-static.net/uploads/4454048/normal_60374645424cf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kukatunudivolu.epizy.com/philadelphia_airport_map.pdf
    • https://uploads.strikinglycdn.com/files/fe6c938e-fd99-48d5-afc9-60db117f691d/where_to_donate_clothes_in_philadelphia_during_covid.pdf
    • https://s3.amazonaws.com/wovugi/galmeetsglam_charleston_guide.pdf
    • http://lemaponu.rf.gd/pisotawapilutalujijax.pdf
    • http://wodowepakimeko.onlinewebshop.net/99186038400.pdf
    • https://s3.amazonaws.com/kewakuko/48415314875.pdf
    • https://uploads.strikinglycdn.com/files/5769d13f-2433-485d-a854-5529e589200e/apc_smart-ups_1500va_rm_2u_smartconn.pdf
    • https://s3.amazonaws.com/wefemabeni/17796028733.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f355.bin
d659cb42061d16fef0a429020ab331b9e31c1c72b988b8a9b6cf417e5201e900
pdf-font-stream PDF embedded font (sfnt) at offset 0xF355 5504 bytes
font_01_sfnt_off000105ef.bin
99091564619831439f378988f69b299f438a25710adebe05d43c2b67dd08a72b
pdf-font-stream PDF embedded font (sfnt) at offset 0x105EF 10516 bytes
font_02_sfnt_off000129f7.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x129F7 4324 bytes