Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab2cc552962cbe9…

MALICIOUS

PDF

74.5 KB Created: 2021-04-03 10:34:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0ff8a394dcc5a4d3ad73e7d40fcbe3dc SHA-1: 648d877bf17f8d0a9d9f53125998874bd4690dfe SHA-256: 7ab2cc552962cbe9d2dd47c07d772c894451d3d78452592eb3622015f4803524
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 0.9992

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://nipisod.ru/strik?utm_term=harlem+langston+hughes+stylistic+devices PDF link annotation
    • http://sigisuzuk.getenjoyment.net/how_many_questions_to_pass_nclex_pn.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/tolavupasosufipnh7v4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443810/normal_60059b0ef39dc.pdfIn PDF document text
    • http://rozel.ru/721819280046c1l3.pdfIn PDF document text
    • https://cdn.sqhk.co/kalusoxat/hiiggii/expanse_cast_season_1_episode_7.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/54110670562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486566/normal_6046376480174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405644/normal_604491cdcb763.pdfIn PDF document text
    • http://padojobimo.mywebcommunity.org/wimedalulenabodaxal.pdfIn PDF document text
    • https://cdn.sqhk.co/wagomito/cji1gcF/rodusez.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/LIhgPji/grand_crime_vegas_city_gangster_mod_apk.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/gewurawubufuko.pdfIn PDF document text
    • http://italywow.pro/bamomiziwunivuvabezufofodxw9z.pdfIn PDF document text
    • http://vawurabel.mygamesonline.org/year_2_addition_and_subtraction_word_problems.pdfIn PDF document text
    • http://sell-toclick.online/herman_miller_aeron_chair_size_a_saleob4bf.pdfIn PDF document text
    • http://zijozarub.mygamesonline.org/bsc_zoology_textbook.pdfIn PDF document text
    • http://nifazafagikoxa.medianewsonline.com/11471588534.pdfIn PDF document text
    • http://sfhgfje5df.xyz/megoxofetipapegujaporonvzrm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zodiripek.myartsonline.com/sbi_net_banking_forgot_password_application_form.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/41208841633.pdfIn PDF document text
    • http://kopurelotalad.onlinewebshop.net/magaxobuzis.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/telecharger_encyclopedie_gratuit.pdfIn PDF document text
    • http://wizigipixe.atwebpages.com/epson_xp_620_sublimation.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE568 5476 bytes
SHA-256: 30f0857b0476d92e12fb71b3a95a7d5856f056456e88fd8b39227fd5d26d3a2b
font_01_sfnt_off0000f7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E5 10604 bytes
SHA-256: 9a5fb9414fb3985ad7878a4e10d17de104df2edca340ee0a69b5a8dc7114fe36

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