Malicious PDF — malware analysis report

Static analysis result for SHA-256 4359eb8e274b30d7…

MALICIOUS

PDF

73.9 KB Created: 2021-04-30 16:26:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdd082ba1150e8a09fe72efba8712f8e SHA-1: 24ac830ac968e28238c3f25e03bcfd2cf3d398c6 SHA-256: 4359eb8e274b30d7798f824319ef9e758763f0c110ad5370bbdf90b6ca7f38cc
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing attempt. The document contains embedded URLs that likely lead to further malicious content or phishing sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious domain for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cfc4270be366a1bf8107c8f9d45d2eae/jototiruxukaledeza.pdf
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/861425cedbebc3d3905529a28a37edba/72074103826.pdf
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/dd701e8cc7e6fd9b7304b98a413f3753/28383057935.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/3278ae320e23c35ebad4616ba997f6d0/14637483820.pdf
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/669d81077cb9ddc4caa15269e15d72ee/deviz.pdf
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/nrgo8t36v6pt8dmmj8s7eo6hi3/93298009478.pdf
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082cfa75bd0f---87882201927.pdf
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba774ac292---mikizu.pdf
    • https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/f8a7vohf5d4rv4mhemnb26mgjm/dusetulibudupupok.pdf
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/17652de54dfe9edafaf127f4d469e24c/gofadikoninumib.pdf
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/dso8l1991c6ofbp118o4pn4g33/93708473401.pdf
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/4icjv0phk41v7ebouqnbdjiq00/21276825357.pdf
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/1f0e12d90676376a90c1b86aa755f24e/22202944410.pdf
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bb830b055c7acbf50d0126bf569baac5/molubigebi.pdf
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16070f1cb89405---sejujekedaziwawomawurij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=terraform+application+load+balancer+listener
    • 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_off0000e1ef.bin
7ac9145914064f58b521db03ff556bfbc89f8870a8b7f5ef64d0ff34aabff781		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EF 5392 bytes
font_01_sfnt_off0000f421.bin
409503aea221bfa2bf2275fec10f94f0f5219f617cfc5c2ca7585b5ac99d9efb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF421 11280 bytes

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