Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbe655f5103b98e…

MALICIOUS

PDF

73.7 KB Created: 2021-02-18 13:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 7ba3bc2a606c0f80392a772f061451a9 SHA-1: 2e74bcf6df22fc0ab470bac57911b26a7842db9b SHA-256: 3dbe655f5103b98e0b5d1003e8f2571b211d8d27fc132c8d1308f0fe2f39b624
196 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://druttle.ru/aws?utm_term=sony+dsc-rx10+iii+testbericht PDF link annotation
    • http://fudomux.22web.org/59921252373.pdfIn PDF document text
    • http://parrrtner.xyz/668849704053gwgt.pdfIn PDF document text
    • http://amorexpo.com/nifadijojezinefofusolj8y.pdfIn PDF document text
    • http://thefortykuti.com/piano_sheet_music_fortnite_challengexvnsq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374519/normal_5ffc57aad7738.pdfIn PDF document text
    • http://izzzaaa.space/lectores_en_red_secundaria_respuestasd98a7.pdfIn PDF document text
    • http://item-get.top/amazon_fire_tv_box_remote_pairingcuny7.pdfIn PDF document text
    • http://whysmall.space/zajasnf4c2.pdfIn PDF document text
    • https://kepijiloxa.weebly.com/uploads/1/3/4/1/134108658/cd2c8b.pdfIn PDF document text
    • http://rakuwotakiko.22web.org/powermate_6000_generator_carburetor_cleaning.pdfIn PDF document text
    • http://lobikekifeviwo.iblogger.org/news_report_tagalog_sample.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/kefiperizonofu/reddit_headphone_amp_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/krishna_aarti_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/xapututuwabapokuweduxige.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/beyblade_game_apk_hack.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_off0000e3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B6 5424 bytes
SHA-256: 911b92b1873f3bf681ba984273e91759c3812ad372e771f1e485c2f5cc0011b4
font_01_sfnt_off0000f63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63D 10408 bytes
SHA-256: 0d4741783653a5b6368fe8e2f9d95eb56b8f7da692863672fd3a16aa7efcae62