Malicious PDF — malware analysis report

Static analysis result for SHA-256 d594c340935c59a5…

MALICIOUS

PDF

66.5 KB Created: 2021-02-23 15:01:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fae1ead1934597c4e15c016b8a209a76 SHA-1: 573768cf8111122310b18da45a240d54158c9bde SHA-256: d594c340935c59a5d31aea04e32b529a5f9cd965d034af24fbb96d5ddfe74a06
186 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.
  • 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://jottigo.ru/wix?keyword=edelbrock+1405+manual+pdf PDF link annotation
    • https://mubuzetuwifo.weebly.com/uploads/1/3/4/7/134703000/nejug.pdfIn PDF document text
    • https://cdn.sqhk.co/liguvikozo/Hijhchf/trash_trick_shot.pdfIn PDF document text
    • http://pubgmobiie.com/ripelesedokubepipols8x4f.pdfIn PDF document text
    • http://aycotoro6.xyz/oprah_winfrey_what_i_know_for_sure_eb2nz5.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwoxebu/VieOOgj/wire_secure_messenger_login.pdfIn PDF document text
    • https://cdn.sqhk.co/kurinunuwor/gnChije/guwiludisugodezawol.pdfIn PDF document text
    • http://tuxodoj.22web.org/wopesivodogoded.pdfIn PDF document text
    • http://seplafond.xyz/bolubesawusugafirepujinuxewvcg.pdfIn PDF document text
    • https://dimutaribosisup.weebly.com/uploads/1/3/4/4/134444719/1312722.pdfIn PDF document text
    • https://cdn.sqhk.co/tuzevawu/1nhihjc/78222776628.pdfIn PDF document text
    • http://blubadgehelp.net/pekobaxessxy3.pdfIn PDF document text
    • https://cdn.sqhk.co/pukikojat/idhjhhd/1164669268.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/wRhbYTk/tap_tap_gun_unlimited_money_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wanuvudeb/VDpgifi/vewakubodisamexawozetavi.pdfIn PDF document text
    • https://cdn.sqhk.co/zizaratijiga/yVNihia/sidotixewebelavu.pdfIn PDF document text
    • https://wifebazeb.weebly.com/uploads/1/3/1/4/131482826/ca74f7cd.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/vefagotoje/bolovimapobejawuwan.pdfIn PDF document text
    • http://rukusogizowo.epizy.com/rumpelstiltskin_short_story_video.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_off0000c671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC671 5692 bytes
SHA-256: 4b1bac958a2eca578c7cd13bf31d966b9a0218995f08b9a52a4b8453752d4e5d
font_01_sfnt_off0000d9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C6 10312 bytes
SHA-256: 3f1d5ecd339ce69d603e8ff03a7d749908dc85cffca3e0a1769ced9c507a6221

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