Malicious PDF — malware analysis report

Static analysis result for SHA-256 d176b57867daa4b4…

MALICIOUS

PDF

174.7 KB Created: 2021-03-27 10:29:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cf78a474852a3fd058696aed2f102389 SHA-1: 5eda651b480c2b6c786cf273333fa276c02066dd SHA-256: d176b57867daa4b45eef7635582d8cc41cd75438df9683ca999c4ea45cd22177
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://pelibifir.ru/award?keyword=cognitive+behavioral+therapy+theory+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383475/normal_603977d461c99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451932/normal_605d04e395c27.pdfIn PDF document text
    • http://sabofogetazo.22web.org/55331611747.pdfIn PDF document text
    • http://segway-wheelchair.ru/juwofuzunidubijokagurobomwisn2.pdfIn PDF document text
    • http://zajiledafalam.getenjoyment.net/27048491350.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/cash_neuro_book_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446633/normal_6005a6527cde7.pdfIn PDF document text
    • http://natiral.space/price_of_pomeranianxrdha.pdfIn PDF document text
    • http://nuturejedekaw.22web.org/creature_with_first_strike_and_double_strike.pdfIn PDF document text
    • http://souve.me/pete_the_cat_and_his_four_groovy_buttons_worksheetsec6p6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maretubozewugi.myartsonline.com/capricho_arabe_guitar_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/mahatma_gandhi_short_biography_in_hindi.pdfIn PDF document text
    • http://satekivu.rf.gd/classification_of_plants_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/2840611419.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/chemical_equations_balancing_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/how_to_calculate_cylindrical_tank_capacity_in_litres.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/zujeralomowopibivobezav.pdfIn PDF document text
    • http://suwuwigo.rf.gd/economic_nationalism_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/how_to_use_chicago_style_in_word.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/9016386070.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/vermont_castings_wood_stove_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/wojorifu.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25A82 5332 bytes
SHA-256: f135015b41244033e83f1018c624d7a1f6ebb11983aea24c90f3a8a9090cff02
font_01_sfnt_off00026ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26CA7 13120 bytes
SHA-256: 6791f20e11f41cb23a5a8d6dca7c3ac7bd51fbcb76e9a68bfa80f3cbf8e18936
font_02_sfnt_off00029723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29723 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7

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