Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e342fe10106f5eb…

MALICIOUS

PDF

62.4 KB Created: 2021-03-01 04:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 327ba6365775cad7b7088e6ca14341ff SHA-1: 578f7ff7c24caf241d4974357c53fa516525123e SHA-256: 6e342fe10106f5eb15ee9b7fe5c6aa5061ec0c8d8ccefd02e1178ed8b2be8482
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://jottigo.ru/123?utm_term=2003+yamaha+kodiak+400+parts+diagram PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389604/normal_5ffbaf4be9332.pdfIn PDF document text
    • http://nesebonuvobeju.getenjoyment.net/84011796905.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_6020fb162a024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387052/normal_5ff9291e745ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447265/normal_600261e2afb95.pdfIn PDF document text
    • http://bestrongbyg.com/space_ship_clip_art_drawing6e4so.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/4610154515.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/vegefepovimuwepexil.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/2018_first_aid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogadawedalifap.onlinewebshop.net/how_to_train_your_dragon_homecoming_stream_australia.pdfIn PDF document text
    • http://gubadif.myartsonline.com/rilagolanuzuparoti.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB70B 5936 bytes
SHA-256: d7c31bff1dfb265f8f538de591896ff414f14e430553a841401299f78daea5a4
font_01_sfnt_off0000cb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB25 9916 bytes
SHA-256: 3e1a02b5cf25d98d5afd6253c57212c3f41452914dd4c19c2d2258a2981e535a

Open this report in the interactive analyzer, or submit your own file for analysis.