Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9297e6f41878a83…

MALICIOUS

PDF

97.4 KB Created: 2021-02-28 14:39:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 959f5ff3d69b1d07edcc8ceddcec1bb2 SHA-1: 1207728b0e1dc5bac89d422e8ea767042cec645c SHA-256: d9297e6f41878a837e6961c623436960ea73d427c21935f398a026f7c75442dd
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-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/123?utm_term=vishnu+sahasranama+sanskrit+documents PDF link annotation
    • https://cdn.sqhk.co/naxusepimosa/jajijgt/kitateg.pdfIn PDF document text
    • http://supfitket.buzz/imagenes_de_de_dragon_ball_ztermh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409113/normal_5fe44f98211bd.pdfIn PDF document text
    • http://supfitket.buzz/photography_quotation_format5ffof.pdfIn PDF document text
    • http://donbetosstreettacos.com/42161237129x2k48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379610/normal_5ff0b2cd820c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460983/normal_60188b01e3da0.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/bjibfge/best_ringtones_2019_english_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464720/normal_5ffae4a5b338c.pdfIn PDF document text
    • https://cdn.sqhk.co/tedisebufen/7jdcvfe/final_fantasy_crystal_chronicles_remastered_release_date_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478378/normal_6022a1c995cc0.pdfIn PDF document text
    • http://sodalabs.pro/52481425217g2j4w.pdfIn PDF document text
    • http://favosiwuvaru.iblogger.org/asbestos_sheet_repair_kit.pdfIn PDF document text
    • http://shop-onlinediscount.xyz/nisonilutemadasidubotonpyurg.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
    • http://davafegi.epizy.com/lamonagijinaroxiwowanomak.pdfIn PDF document text
    • http://fewuzefar.rf.gd/what_holidays_is_the_banks_closed_2020.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105AC 3104 bytes
SHA-256: 24551eddf735aab63d4c7e1e241f9f40a571c0286a9358847cb31cf4386de53e
font_01_sfnt_off000110bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110BF 5176 bytes
SHA-256: f45e0c3b43b63e4457fd094f8cfcb3ade91e536abd07a4801bd9858a6dfdd471
font_02_sfnt_off00012231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12231 11864 bytes
SHA-256: 02fa25bab448ac042de2579d0a24122c087b76f977b7dd9c0cc02b649a5b5f43
font_03_sfnt_off00014857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14857 16396 bytes
SHA-256: 310438a9a8929c4cd73cebd4038cf23d4dd7ac92d4f85de1c7a2192b822deaf2
font_04_sfnt_off00015ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15ECB 7312 bytes
SHA-256: 5cdff4efbc6d5153de09db6de80cf4135206735c5f884194996b7801e0f786b2

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