Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dec4211b2149ee3…

MALICIOUS

PDF

73.6 KB Created: 2021-03-31 18:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: aa40a6626f97c24ad086d1b6622d519e SHA-1: 980fadd5e70b63a0e45508d257aa6170cfbdf2e3 SHA-256: 4dec4211b2149ee390c4f770c0e708ae2b4b14a10377258492469328a94629f2
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 0.9996

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://baarspo.ru/award?keyword=bhagavad+gita+telugu+full+pdf PDF link annotation
    • http://bezigex.iblogger.org/57020905305.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/puma_air_compressor_manual.pdfIn PDF document text
    • http://online-bestshop.xyz/dodge_caliber_dash_light_symbolsiup6w.pdfIn PDF document text
    • http://gakotob.iblogger.org/wulojiliwupi.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/iiOhfRQ/assassin_s_creed_identity_mod_apk_2020.pdfIn PDF document text
    • http://casserlabs.xyz/mekabewixummvuyu.pdfIn PDF document text
    • https://cdn.sqhk.co/duzefodaf/ggsy8kZ/1383879146.pdfIn PDF document text
    • https://cdn.sqhk.co/lumozupa/DpIvhjP/xadovedawusiromesumazu.pdfIn PDF document text
    • http://steelsho3.club/2016_dodge_dart_rallye_2._4_specstex2v.pdfIn PDF document text
    • http://verification-help.com/call_of_cthulhu_players_handbook579lh.pdfIn PDF document text
    • http://luminar2-download.xyz/ipega_bluetooth_controller_iphone_setupmtflu.pdfIn PDF document text
    • http://watogoda.mypressonline.com/what_type_of_yarn_is_caron_simply_soft.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/afd22d49-ea13-47d1-945e-ba56ffff88b7/eliphas_levi_pronunciation.pdfIn PDF document text
    • http://nejarisiwudu.atwebpages.com/gizisafuxizorigitafodasa.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/73704728495.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/7592087996.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/51328478690.pdfIn PDF document text
    • http://tipujujidudig.rf.gd/52385205501.pdfIn PDF document text
    • http://sozidimimu.rf.gd/98176578225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bf054ea-08a5-4883-899a-c60783ab4ddd/zutevitexabizofebizataw.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/d_t_h_full_form.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d38f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38F 5140 bytes
SHA-256: d7cc2fbb3659e97bfd8181317954a408dc8823c2e7ce451aece1615985fd25a5
font_01_sfnt_off0000e51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51D 4404 bytes
SHA-256: 9172484033437dea62b7f1b4d3d2ae9eb0f9fabc543c09c4886f8c7b8a1c25a9
font_02_sfnt_off0000f4a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A8 10804 bytes
SHA-256: ba28c5aff12a1ba2e891422f39140d56e1c8ec908fed00c24a8f53cb2f6de2d0

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