Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceb9a7938ea0e72f…

MALICIOUS

PDF

83.4 KB Created: 2020-12-22 17:25:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d9d6189f0c3549c4325cb998fe691ec SHA-1: d5087b14c77ae0722c013d6b029bee000a08d531 SHA-256: ceb9a7938ea0e72fe1c312cc99f564675d4adf192b44bdd764330e4463482410
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, identified as a link farm. One of the primary links directs to a known malicious redirector, suggesting an attempt to lead users to malicious content or phishing sites. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a phishing or trojan distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://traffmen.ru/strik?utm_term=bubble+shooter+super+nintendo
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/tijator.pdf
    • https://gozisali.weebly.com/uploads/1/3/4/6/134670052/gezodala.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/c062c3b3-4eb1-4c95-b735-9536a5235bea/44085954674.pdf
    • https://static1.squarespace.com/static/5fc144361c8c7413143450ce/t/5fc2cddcf8cdb769c6403dad/1606602205771/poratikijaxus.pdf
    • https://static1.squarespace.com/static/5fc4e4d1ea4a794d565eb1ca/t/5fce5f032fa8bc6bcd1c598a/1607360259658/zeparujopadedokuwevil.pdf
    • https://static1.squarespace.com/static/5fce40bc49d01c20c20541d4/t/5fd6c30dd654060362d6f3cc/1607910159569/mojinujomatorovafesopu.pdf
    • https://static1.squarespace.com/static/5fe15873aed8cb3cf82b8f13/t/5fe16e2de77a3c5c7edcb668/1608609328865/opera_android_addons_installieren.pdf
    • https://uploads.strikinglycdn.com/files/e761a58c-a6d9-4f2d-8628-8ead1de880fd/fexixuwowudux.pdf
    • https://static1.squarespace.com/static/5fc32ee32cf09257bd7ac96a/t/5fca718e3a76450e08819a82/1607102863227/hashtags_to_use_for_instagram_reels.pdf
    • https://static1.squarespace.com/static/5fc2b3906b97992eb5678c6c/t/5fd00556349c94085918714e/1607468375329/pancake_maker_fun_food_games.pdf
    • https://static1.squarespace.com/static/5fc394550a2757459bf3c614/t/5fc81c1a46ef2e08cba8899b/1606949915045/80640269506.pdf
    • https://uploads.strikinglycdn.com/files/06d8cb91-456d-4234-ba5b-659beb455aec/subnautica_maille_de_fibre.pdf
    • https://s3.amazonaws.com/foneniz/el_alquimista_gratis.pdf
    • https://static1.squarespace.com/static/5fc0dd131452f90b7fe52ecb/t/5fc15a199d79364840bfe92e/1606507033312/geometry_final_exam.pdf
    • https://uploads.strikinglycdn.com/files/121723d4-d042-4bca-aaef-6621fcb17a99/wireless_ps2_controller_not_working.pdf
    • https://s3.amazonaws.com/jozetej/tango_washington_dc.pdf
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f15b.bin
be0f09b57651cb1f05bd2ae892e15982a64a6364995e09faeb9ad70efb9dcaa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF15B 3280 bytes
font_01_sfnt_off0000fd37.bin
6eb14c88428587d18bf74a3d56caff4881e783da2ffe1c12f21eb4102adc5a53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD37 4908 bytes
font_02_sfnt_off00010dd0.bin
7f65ea7bcb512eb0534afb63732760927820bc8fbb38fb7f2bc6e28f51670133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD0 10592 bytes
font_03_sfnt_off000131eb.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131EB 4324 bytes

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