Malicious PDF — malware analysis report

Static analysis result for SHA-256 0145c01e6d4de125…

MALICIOUS

PDF

83.7 KB Created: 2021-03-30 03:19:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8c03958cb5309f2c2f4cc8428a3ba69e SHA-1: 4eae789ef60dbff3606f17a0362e7d9fe6f11066 SHA-256: 0145c01e6d4de12583a4389a3e83147fb5e8011faa8036a93fcf37458c17b84c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/wix?keyword=gem+car+charger+manual PDF link annotation
    • https://cdn.sqhk.co/fexiseme/heQ0FLz/grand_theft_auto_3_ps2_iso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420747/normal_600841eb160d0.pdfIn PDF document text
    • http://jufidozotazi.66ghz.com/40246116648.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/khamAgh/kirenesosux.pdfIn PDF document text
    • https://cdn.sqhk.co/gatavikap/jbKibju/zombie_age_3_apk_hack_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394073/normal_6060ed8fdd560.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470688/normal_60132fc6ca40d.pdfIn PDF document text
    • http://bazunujovi.scienceontheweb.net/wesal.pdfIn PDF document text
    • http://kosolibanun.iblogger.org/tojobanepusap.pdfIn PDF document text
    • https://cdn.sqhk.co/bepesewutu/hhiuv2y/download_game_metal_soldiers_2_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/risubibasero/9hjKhgn/victory_day_2020_usa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470535/normal_600f149502c0b.pdfIn PDF document text
    • https://cdn.sqhk.co/xolokenuw/ybzggig/jepiboxanovasamunusajebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lifenovofelajo.epizy.com/corel_draw_x6_tutorials_in_urdu.pdfIn PDF document text
    • http://fisejotigu.epizy.com/tubugozarole.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/moreluxovumi.pdfIn PDF document text
    • http://dilutibu.onlinewebshop.net/mumbai_map_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/how_heavy_is_baby_grand_piano.pdfIn PDF document text
    • http://kurorasi.rf.gd/luvesiwemumosap.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/verification_of_property_condition_example.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/dogulumavetajiwebix.pdfIn PDF document text
    • http://giworutiw.myartsonline.com/tinagiladotat.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_off0000f3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A8 5064 bytes
SHA-256: 7fb04afdd8b2cda11fe707017ce1d1095232aad944347bd4628a6a592ddf477e
font_01_sfnt_off000104bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BC 11656 bytes
SHA-256: 962777a6a9516d98441eeb47b8424dfb099502bdadd180b72d4daf129ca8f220
font_02_sfnt_off00012c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C95 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330

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