Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f5918f5f03f9ed…

MALICIOUS

PDF

79.0 KB Created: 2021-03-31 03:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1755ec0b9d0c896b2b738805012e3775 SHA-1: 10a00b2ff33a466ab230da6332e2064f37b70734 SHA-256: 43f5918f5f03f9edfa110bdda21d0e1441a98644a9a19d14e896ca545d00ef3f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing trojan. It contains a large number of external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm or phishing campaign. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous external links strongly suggests a malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/wix?keyword=2013+jeep+rubicon+10th+anniversary+colors
    • https://cdn-cms.f-static.net/uploads/4487625/normal_6010468a576d7.pdf
    • https://cdn-cms.f-static.net/uploads/4452381/normal_603a0d2228919.pdf
    • http://wersita.space/25640055204ka1uy.pdf
    • https://zexojoru.weebly.com/uploads/1/3/1/4/131409474/debomulepisako-gusuzukorebono-dowaxomidizin.pdf
    • https://cdn.sqhk.co/tezesafura/fhfXdDO/wugifepuwesalidemuva.pdf
    • https://cdn.sqhk.co/palevisi/dxyPgeW/heroines_fantasy_facebook.pdf
    • https://cdn-cms.f-static.net/uploads/4415534/normal_603f7c866f9ae.pdf
    • http://theandyhong.com/can_i_watch_harry_potter_for_free_on_amazon_prime51fj1.pdf
    • https://static.s123-cdn-static.com/uploads/4385859/normal_5ff8d4bd72f0e.pdf
    • https://cdn-cms.f-static.net/uploads/4495860/normal_6043f8b8a9712.pdf
    • https://cdn.sqhk.co/tazewupo/dggF7hf/27992883502.pdf
    • http://pestore.pro/burapaxuzubinwym6s.pdf
    • https://static.s123-cdn-static.com/uploads/4481173/normal_5fcdac7669e85.pdf
    • http://allwoman.site/51170919108nra2k.pdf
    • http://goromeo.club/bose_wave_music_system_iv_manuali11qf.pdf
    • https://xokokojimaxuwot.weebly.com/uploads/1/3/5/3/135345946/7770987.pdf
    • https://cdn-cms.f-static.net/uploads/4369143/normal_5fdb8e326e43e.pdf
    • https://cdn.sqhk.co/bumadawab/pPXhihi/anzio_movie_free.pdf
    • https://rawewefugu.weebly.com/uploads/1/3/4/3/134394717/xubot_lejuzasev_temazupenev_rovunuker.pdf
    • https://cdn.sqhk.co/botonerepap/hdjdhgC/zm_stock_tipranks.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ede36962-9452-4451-b182-fa4236ba9bc6.filesusr.com/ugd/83b1b3_f428c71597d544e4ba3e1a4cb37e4ba0.pdf?index=true
    • https://e05653fc-386e-4c8b-889d-738aee72c63e.filesusr.com/ugd/62421a_ee7721017d4e46aea331d041ec07581d.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1de.bin
ac9f7a2a3ed4e564cfa0561eecd833a0d2b4d3935d26235d3a93f495fc8317c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DE 5796 bytes
font_01_sfnt_off0001059c.bin
34843ec8b3a86373feb71b51e6e58c26925e078a3a06ecd6ea49d28b561a294a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1059C 11956 bytes

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