Malicious PDF — malware analysis report

Static analysis result for SHA-256 0606c2192ad4df2a…

MALICIOUS

PDF

73.1 KB Created: 2021-02-10 01:28:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 272bd9ec4a9f2faf9cfc8b3efa59e2e0 SHA-1: 9c0a2add41f764dd3aefb47aa3379708eaf8f94a SHA-256: 0606c2192ad4df2a711b1f96ae1feefa7a9b6cdae39ed7e2470d6bdcba9caf6a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wb?keyword=electrocution%20management%20guidelines PDF link annotation
    • http://pasetbs.xyz/forex_swing_trading_cheat_sheetvxe33.pdfIn PDF document text
    • https://linerebe.weebly.com/uploads/1/3/0/8/130813546/3cf1b2750b.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/tawemamedujilolqgif9.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/fibghge/skinstore_cashback_ebates.pdfIn PDF document text
    • https://cdn.sqhk.co/mipekakiri/YhjdxN2/guess_the_song_by_emoji_bollywood_2020.pdfIn PDF document text
    • https://resafuki.weebly.com/uploads/1/3/1/3/131398359/fimipu.pdfIn PDF document text
    • https://kixixowagixu.weebly.com/uploads/1/3/2/7/132710794/2a29cc355c8c.pdfIn PDF document text
    • https://bizavewes.weebly.com/uploads/1/3/5/3/135323934/1283249.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/wezukep/4300497577.pdfIn PDF document text
    • http://zosutifajo.rf.gd/78331709582.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/gingival_enlargement_case_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/64488644955.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/vuwifivisigu.pdfIn PDF document text
    • http://vanogete.epizy.com/dalurolasatemukuzus.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/basic_electronics_and_communication_book.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_off0000e20f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20F 5216 bytes
SHA-256: d56cfdd62a8c85bf1c3530c963510f0692191319abb912e87cd4d8585db40278
font_01_sfnt_off0000f3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B3 10520 bytes
SHA-256: 85b1757cc8f91c82c2fd6ad7f37fa28199ccd189302682cc1357beb3ea32b884