Malicious PDF — malware analysis report

Static analysis result for SHA-256 34e59459cbefac89…

MALICIOUS

PDF

78.9 KB Created: 2021-02-24 20:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6da444ab0c8d17d8fe24648911da4945 SHA-1: cb962d396b342b283e73ed046fa26b9905bf1b5a SHA-256: 34e59459cbefac8993357cd398151d17727b3952a95ca397dfb196cfb2808647
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to other PDF files, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing and potentially a trojan. The document's content, though heavily obfuscated, appears to be a lure related to firmware downloads, aligning with phishing and scamming attack patterns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/strik?utm_term=garmin+gpsmap+62st+firmware+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375522/normal_5fc60533cabe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488837/normal_6031628d2bde3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374703/normal_5ff853435a408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443602/normal_602b9ae252b5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372376/normal_5fee0a7a3b061.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/ie06fhh/ivan_pavlov_classical_conditioning_experiment.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/gcggiJI/frag_pro_shooter_apk_mody.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/lg_soundbar_nb3530a_mounting_bracket.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403687/normal_60014ee2c04a4.pdfIn PDF document text
    • https://nurivotewifigex.weebly.com/uploads/1/3/1/1/131163684/2617652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409393/normal_5fcd3caec525b.pdfIn PDF document text
    • https://dabusoze.weebly.com/uploads/1/3/4/5/134585091/687365.pdfIn PDF document text
    • https://cdn.sqhk.co/badexejos/hbkjegf/secret_of_mana_2_snes_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/fajixojemom/wOchfO7/mermaids_cher_streaming.pdfIn PDF document text
    • https://cdn.sqhk.co/bibolaned/W59ijX9/free_bingo_card_generator_excel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikubub.onlinewebshop.net/zojubimapeduvexobajem.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/astrology_prediction_by_date_of_birth_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/jokes_for_adults_with_answers.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_off0000f663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF663 5772 bytes
SHA-256: 3dae9a7eebe4a694b1a8e642fecc76543ef6681630f177a552d115edf9760a58
font_01_sfnt_off00010a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A10 10672 bytes
SHA-256: 16d6d55d65b69549a79bce69fe95d2e71a76a9e40946c01d1be60a73f9c368ef

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