Malicious PDF — malware analysis report

Static analysis result for SHA-256 f57be5df9d8c4c48…

MALICIOUS

PDF

86.0 KB Created: 2021-04-02 09:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edd482c1d61614b84a45107fc813dce6 SHA-1: 11a347ede74de55e42715bfcff6f85f54bf965e8 SHA-256: f57be5df9d8c4c4817167a70d33c1fb3f9aa155bc8714cda2a1cf76bd7938174
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL `https://seumenha.ru/wix?keyword=pure+mountain+botanicals+broken+cell+chlorella` suggests a phishing or scam attempt, likely disguised as a search result to trick the user into visiting a malicious site. The presence of external URIs and the overall detection profile strongly suggest a phishing attack delivered as a document attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=pure+mountain+botanicals+broken+cell+chlorella
    • http://benaletuzulug.sportsontheweb.net/surabuvebafeniv.pdf
    • http://good-production16.site/3370987162dqps6.pdf
    • http://fafuzum.sportsontheweb.net/brother_dcp_t310_specification.pdf
    • https://zogugixuwomu.weebly.com/uploads/1/3/4/2/134234599/puxefalagezaderoku.pdf
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5ffc3961d93fe.pdf
    • https://cdn-cms.f-static.net/uploads/4415322/normal_601bb2babb9bc.pdf
    • http://datab.vip/three_dimensional_shapes_worksheetywnul.pdf
    • http://alania365.ru/pelozideroxinezmudt.pdf
    • http://collegegraduatecentraldating.com/red_neutralizer_for_hair3pkwh.pdf
    • https://cdn-cms.f-static.net/uploads/4389582/normal_604e739de0bd8.pdf
    • http://datiwufirul.medianewsonline.com/catalytic_reactions.pdf
    • http://topcreditcheck.info/xenupejxd8l.pdf
    • https://xifofenanupov.weebly.com/uploads/1/3/4/8/134857182/pogiw-jelajakupud-kupopobob.pdf
    • https://cdn-cms.f-static.net/uploads/4420430/normal_603e60897b9d3.pdf
    • http://voirlo.xyz/govowinewegerazononukiluzzaq2r.pdf
    • https://kolojadulosa.weebly.com/uploads/1/3/1/3/131397946/7f4b5cf06.pdf
    • http://rent-nout.site/195640889424f413.pdf
    • https://cdn-cms.f-static.net/uploads/4444649/normal_604d1885efeba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://pudosuvosav.atwebpages.com/47487770939.pdf
    • http://wipibefab.onlinewebshop.net/spinal_cord_injury_treatment_guidelines.pdf
    • http://vilatelisoto.onlinewebshop.net/giuseppe_verdi_biography.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_off000101f9.bin
a12f88a7848fc7bb989e1ff8e68ac756475fd96988367cbc5028e4793b5588b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101F9 5128 bytes
font_01_sfnt_off0001132c.bin
2281234788ad1a3fc70c3985eb3fed465e3f595d4e6a3fddefc4d3287fb0f766		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1132C 12340 bytes
font_02_sfnt_off00013c31.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C31 4324 bytes

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