Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5675ba1c76d815e…

MALICIOUS

PDF

1.57 MB Created: 2021-03-20 16:04:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 423fb9b2738c2a998c382ddc057138d5 SHA-1: d6ad284d6418e42abfd926a0d2ea68bab89a2f9e SHA-256: e5675ba1c76d815e93bd952cbaa106efae8538717e1738e09d1e257d2ff1412c
66 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with a signature indicating phishing and trojan activity. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, contains text related to 'encyclopedia of triangle centers' and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0047

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://jumiwimov.ru/award?keyword=encyclopedia+of+triangle+centers+pdf PDF link annotation
    • https://cdn.sqhk.co/zejizoguzut/iggjgTk/58706049171.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/dgeicDw/domino_dash_lab_answers.pdfIn PDF document text
    • http://firobazotu.sportsontheweb.net/fuzinubotavefaxa.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/jf1jf7t/91528502275.pdfIn PDF document text
    • http://kebotup.66ghz.com/kugesotoruxerutelafe.pdfIn PDF document text
    • https://cdn.sqhk.co/luwesefizi/7j7qlgc/29034857033.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/hMW9hee/mogujaletakodorubi.pdfIn PDF document text
    • http://sikepelisu.22web.org/buddha_mantra.pdfIn PDF document text
    • http://rejawulomov.mywebcommunity.org/59550861415.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/njcFpVF/like_a_boss_film_release_date.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/tekonsha_prodigy_rf.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/64550001128.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/70258619483.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/google_dictionary_extension.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/pogewukos.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/zusap.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/73412472265.pdfIn PDF document text
    • http://rolozaj.epizy.com/gimumurekavivowiwusaw.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00186f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186F6F 2828 bytes
SHA-256: 85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f
font_01_sfnt_off00187973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x187973 5384 bytes
SHA-256: 033662aa14393bf1c8c6c42db3b199a5e669464d04cc0cbca2c03e02ca09f426
font_02_sfnt_off00188beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188BEB 8876 bytes
SHA-256: fe32ec37f78e96e933f9eb514eea7d6a05628ce7d73636eadae9039a0683c5eb
font_03_sfnt_off0018a80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A80A 13244 bytes
SHA-256: da541406a51e3e9e756c60341c66856c4d091ca9c393c6fbde12cee5a67fbe31
font_04_sfnt_off0018d4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D4BB 16472 bytes
SHA-256: ad2a520577f4f262f7993172e9abaa5c4884b451cdbe8ef38eb3474a9f5fa470
font_05_sfnt_off0018eb57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18EB57 4440 bytes
SHA-256: dc1774030efdfd433f312e17f705bfbd066a3457cfaa3dced713ab54322cd14f

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