Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94971227410fb95…

MALICIOUS

PDF

72.9 KB Created: 2021-03-09 23:28:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f74df734aa61a9e5c1939121fc06aa8 SHA-1: 2161307cfb2b871b306e5f164d229fc9c52a8b12 SHA-256: c94971227410fb95369c5ef76a9dc0ede1d611e9919a7b0880eb76cc0d65b763
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Retrievers and friends' and the authoring application, suggesting a lure to a website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://kuzutuzo.ru/wix?keyword=retrievers+and+friends
    • https://cdn-cms.f-static.net/uploads/4383688/normal_5fd9af75219b3.pdf
    • https://cdn-cms.f-static.net/uploads/4413226/normal_601d14cbbbadc.pdf
    • http://bagesopabiwub.scienceontheweb.net/how_to_eat_fried_worms_book_online_free.pdf
    • http://kawafopi.mygamesonline.org/66970105846.pdf
    • http://rowowevu.mypressonline.com/3986323352.pdf
    • https://static.s123-cdn-static.com/uploads/4401703/normal_5ff71c092b1af.pdf
    • http://zoxodur.sportsontheweb.net/furamogamokigeba.pdf
    • https://static.s123-cdn-static.com/uploads/4490547/normal_5fec0c5be416c.pdf
    • http://vobafoselalulor.mypressonline.com/tevukobapexetabevu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wokidomogu.onlinewebshop.net/56769363556.pdf
    • https://s3.amazonaws.com/kibavutibeved/zalozofuwipedibuvedid.pdf
    • https://uploads.strikinglycdn.com/files/56ec26c6-89bf-4b47-9e2e-1cc8cd75319e/gexaluxelugifo.pdf
    • https://s3.amazonaws.com/xetasif/generac_generator_user_guide.pdf
    • https://s3.amazonaws.com/jipowumat/how_many_calories_in_a_sonic_diet_cherry_limeade.pdf
    • https://s3.amazonaws.com/debiwelof/fedafa.pdf
    • http://rorazizaxaf.atwebpages.com/34694757655.pdf
    • http://jimomurapujivo.onlinewebshop.net/pejutuwakusenere.pdf
    • https://uploads.strikinglycdn.com/files/78d23de3-a161-477e-9b43-234a1adc3eb6/contax_t2_or_t3.pdf
    • https://uploads.strikinglycdn.com/files/0c221fa8-fcb3-4da6-b713-35e3ef8889e6/verizon_fios_router_default_user.pdf
    • https://uploads.strikinglycdn.com/files/abcc7f1a-15ba-44cc-b238-5e9945fb6a28/gaxemunesixesaxuxepewog.pdf
    • https://uploads.strikinglycdn.com/files/60ab3e3e-fe32-4c0f-bdfe-c24adf17a51c/whats_the_difference_between_a_habitat_and_a_niche.pdf
    • https://s3.amazonaws.com/lopeteb/how_to_change_screen_size_on_lg_tv_using_sky_remote.pdf
    • https://uploads.strikinglycdn.com/files/f88d321a-d672-491a-866a-68bb77f73824/what_country_is_prince_eric_from_the_little_mermaid.pdf
    • https://uploads.strikinglycdn.com/files/4ba870c8-9802-4630-aa86-7ce2c2f12c73/96557780400.pdf
    • https://uploads.strikinglycdn.com/files/689ac20a-e533-466a-a19a-5be649f6500c/spanish_beginner_vocabulary_list.pdf
    • https://uploads.strikinglycdn.com/files/031ce668-995d-4f64-bba0-a5d7115f78d6/14348779392.pdf
    • https://uploads.strikinglycdn.com/files/51e9ffb1-7215-4aa5-bea2-c2bee0c74274/nexomesetomuruxa.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_off0000d55c.bin
73e8591ac9bbdec5a8b64b9a50354cc9cd81630d62c2684de49a44f159a4d2db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD55C 4612 bytes
font_01_sfnt_off0000e513.bin
96f56b3975733eacbde1a2d27c01bdb2f0713c6f4367f9d0c34e37226917b265		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE513 10008 bytes
font_02_sfnt_off0001076c.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1076C 4324 bytes

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