Malicious PDF — malware analysis report

Static analysis result for SHA-256 17fd7a018f5b2392…

MALICIOUS

PDF

86.3 KB Created: 2021-07-22 00:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 029793870e59f2ebe547f2fb7593a2f6 SHA-1: 238b6bbbadf3995ac3506ecc8922ece8e66fe19c SHA-256: 17fd7a018f5b23927b1fc05cf17df94500d015c5bda1c0372b2e7a531fbea0a0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of embedded URLs, although many are marked as benign, suggests an attempt to redirect the user to malicious sites. The wkhtmltopdf authoring application and the nature of the heuristics indicate a crafted PDF, likely intended to exploit vulnerabilities or trick users into downloading further payloads.

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://feedproxy.google.com/~r/sq/ugae/~3/XMoLd4EPXkg/square?utm_term=principles+and+design+of+mechanical+face+seals+pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edca0d172ba47bdac1766b/1626196493929/create_bookmarks_from_word.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f2efe46678663e6a2b62ba/1626533861045/91470105051.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f596ce7f1a3935de33d93e/1626707662229/wivatixubepofo.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8551b8cbe518df57f92d/1626113361767/funapivitotedomo.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7e3b05c1b8460033f2489/1625809840198/muniwiwonuparojid.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e79b33b977dd1475c6346e/1625791283654/i_have_eaten_the_plums_that_were_in_the_icebox.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecc4bbf31b3f5eb1e4e5e9/1626129595951/finite_element_analysis_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f88b6dbcf537238d75cb0c/1626901358045/49055906662.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed8b5e6bb85f4a8d887a7c/1626180447036/pukir.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60efd461d9659e27864448fd/1626330209486/gre_barrons_word_list_with_sentences.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f7fc85ef6cd9062fee86fd/1626864773971/83968153321.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8b7eafe2317389cecb5ec/1625864170769/liwedorefuvilopidugaz.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f5aa737cd9c94208436216/1626712691733/23039181518.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edeed4d6548a387fd4c52e/1626205908607/how_many_days_can_cooked_salmon_stay_in_the_fridge.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e924b7f229ba2ea8371b11/1625892023351/durexikugalapevezoduxevu.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f50232c0fa6a1644f28fea/1626669618542/kinewudulerenisomux.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf4.bin
a96ef98792e2e6393a3c8ccd88c9fc07d7c7fc42086bd154a10048227119f93f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF4 17044 bytes
font_01_sfnt_off00011a99.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A99 16792 bytes
font_02_sfnt_off000132b0.bin
c78dbf59b0db987f8716d137fe9463f7d54eb22edc93ebb2620c9a7d0cc59bdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132B0 10972 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.