Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c287f89e622a52…

MALICIOUS

PDF

120.1 KB Created: 2021-04-03 14:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 685fc8775c59f562265f2159add385ca SHA-1: c293160b263238ea97f824b59848605f2d3372e9 SHA-256: 62c287f89e622a529a14bdc27d5568c2c39a362fa91d760c8c86cea0650386ff
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to link farms and disposable hosting, a common tactic for phishing or distributing malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=depository+name+chase PDF link annotation
    • https://cdn.sqhk.co/pixafosabow/0hdTWhe/healthy_grocery_shopping_list_trader_joe_s.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/branding_labelling_and_packaging.pdfIn PDF document text
    • https://cdn.sqhk.co/kizusuvut/d3lT7uR/70651205758.pdfIn PDF document text
    • http://beduzevitugok.mypressonline.com/what_does_1_tablet_twice_daily_mean.pdfIn PDF document text
    • https://cdn.sqhk.co/dapumexader/jAjcpjg/jijod.pdfIn PDF document text
    • https://cdn.sqhk.co/kigifadarija/ggghhIp/funny_video_for_tik_tok_musically_tip_top.pdfIn PDF document text
    • http://xebiniseba.mygamesonline.org/dell_latitude_e6410_vga_drivers_windows_7_64_bit.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/haryana_apartment_ownership_act_1983.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/vegobiwenav.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/43284199187.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/Ijdiihf/36536994609.pdfIn PDF document text
    • http://zovolexune.sportsontheweb.net/74900295833.pdfIn PDF document text
    • http://zujejilolo.scienceontheweb.net/diforejotevov.pdfIn PDF document text
    • http://jolijivik.scienceontheweb.net/klasifikasi_aphis_gossypii.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://livirava.atwebpages.com/56233220251.pdfIn PDF document text
    • http://vobikeretuwof.atwebpages.com/91187181538.pdfIn PDF document text
    • https://4ab51db4-2ab9-4ce7-8cf9-a7235cd4f8a6.filesusr.com/ugd/c6359c_c6245bd9423a4bebb604b830bbd15a55.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/barramundi_asia_annual_report.pdfIn PDF document text
    • https://167c8e7b-8160-49a2-a88e-f26749d647c8.filesusr.com/ugd/1ad47d_875dd0680c3541908adbf904e0d57a6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/peugeot_206_cabrio_manual.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/duwejebediwas.pdfIn PDF document text
    • http://sorisavitekinuj.onlinewebshop.net/zitegesekukawinanurixokox.pdfIn PDF document text
    • https://3350d16e-2476-487b-844f-3942c02081ad.filesusr.com/ugd/25270e_5627812350fb4fb8ae519524769022c6.pdf?index=trueIn PDF document text
    • https://37523d11-79cf-4eb3-ada4-f05de57c71ee.filesusr.com/ugd/275374_3456646715fc47adaf9e661e7535948b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dosipive/northouse_leadership_book.pdfIn PDF document text
    • https://973697ad-ffa4-4f9d-85cd-0c9d1ea039ee.filesusr.com/ugd/5f5755_aab1016f05d04f3480e275464a2dea6f.pdf?index=trueIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18972 5032 bytes
SHA-256: d5a45dcb441625e3800ae15768bb9a6c9f93c8064449b2d470c29ad4e1bd4833
font_01_sfnt_off00019a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A62 12512 bytes
SHA-256: 65426c16efac741ad2c36c83c4ecf8954f3ef47633c899a97648d0ff0f837756
font_02_sfnt_off0001c491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C491 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176