Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea07c78f6b92f34f…

MALICIOUS

PDF

72.1 KB Created: 2021-04-08 06:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c300a35da150d64e132916f037d65dc3 SHA-1: 59acdbbcbaeaf401b4ca2111de1ea4341531806b SHA-256: ea07c78f6b92f34f9c50b2200a483c285368644277026df0a83fc9ceb30a3a1e
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 0.9993

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://gimoguvi.ru/wix?keyword=notacion+cientifica+multiplicacion PDF link annotation
    • https://wadapunefivuda.weebly.com/uploads/1/3/4/3/134307948/borate.pdfIn PDF document text
    • http://game-pro.xyz/60762068294s28wf.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/frequentist_vs_bayesian_meta-analysism0rva.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/how_to_do_the_aa_12_steps.pdfIn PDF document text
    • https://foxodutamawasu.weebly.com/uploads/1/3/4/5/134587344/7086683.pdfIn PDF document text
    • https://fibetenozogu.weebly.com/uploads/1/3/0/8/130813768/33f273309.pdfIn PDF document text
    • https://fogakorix.weebly.com/uploads/1/3/3/9/133997140/sezam.pdfIn PDF document text
    • http://lightly.store/16315708034ohwdv.pdfIn PDF document text
    • http://fallofelin.online/diy_platform_canopy_bed0lpd7.pdfIn PDF document text
    • https://bikawinudom.weebly.com/uploads/1/3/4/5/134595305/repepowoz.pdfIn PDF document text
    • https://kulaxebide.weebly.com/uploads/1/3/2/3/132302774/4323180.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/cd4051_datasheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/i_would_like_to_meet_you_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/89148755628.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a45b512-f51c-446b-946e-26f1eaefa9b8/dog_man_books_1-4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e0417ad-3dd8-47de-94f0-1c706e9d09a1/junakuzabemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f568e3-08ca-45ca-a370-3730fe7499ea/zolizalugovodemaximozazi.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/tanoketir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb552720-22b0-4a40-bb3e-a7fd9fc15a5d/mevidufavirosubekomuzub.pdfIn PDF document text
    • http://gajutar.onlinewebshop.net/editable_bingo_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66a0abe1-a0bc-42a3-ac7d-93a604954a94/canon_speedlite_580ex_ii_second_hand.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/jasper_reports_parameter_queries.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/91355437103.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7B 4856 bytes
SHA-256: cd719f64e99b7a8c41c3db4aee286c31a2ddfb61e220eea3558e03f53abf3139
font_01_sfnt_off0000ec03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC03 11848 bytes
SHA-256: 65a42637f82a873cb653f2082dc8608c0a3a549d11b6137a4433c4762a44b5db

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