Malicious PDF — malware analysis report

Static analysis result for SHA-256 a64ece0bce52fadf…

MALICIOUS

PDF

77.4 KB Created: 2021-05-22 22:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1396ecc37453a90da118c34c716e15b SHA-1: dc5d3b13865f4b804355fb8f321813b2485bacb9 SHA-256: a64ece0bce52fadf7294b15f54973c44e9421e2738d7ca623b1e3beb70819474
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many of which are likely part of a link farm designed to direct users to malicious websites. One of the primary external links, 'https://seumenha.ru/strik?utm_term=is+there+a+netflix+app+for+ipad+mini', suggests a phishing or scam lure. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/strik?utm_term=is+there+a+netflix+app+for+ipad+mini
    • https://pozajuraxox.weebly.com/uploads/1/3/4/5/134591712/bolevexir-musokasop.pdf
    • https://cdn-cms.f-static.net/uploads/4447916/normal_60491d619cea5.pdf
    • https://gomafaned.weebly.com/uploads/1/3/5/2/135296522/2914625.pdf
    • https://sezitekiporav.weebly.com/uploads/1/3/4/6/134627959/suwefi.pdf
    • https://pugufatafa.weebly.com/uploads/1/3/5/9/135967981/sivezirotanutuxarefo.pdf
    • https://wikifepum.weebly.com/uploads/1/3/3/9/133986434/muliriz_netemexa_lolevepodepojug_kewepira.pdf
    • https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/83d518aecf19.pdf
    • https://xuwukebi.weebly.com/uploads/1/3/4/4/134472968/komene_loxokunusuvalid_povoked_dopawujirupaz.pdf
    • https://mokowevabib.weebly.com/uploads/1/3/0/7/130739664/majutumekofig.pdf
    • https://cdn-cms.f-static.net/uploads/4455902/normal_605f6ec0a4355.pdf
    • https://ladetizor.weebly.com/uploads/1/3/4/7/134731735/lozivokijinepibawuv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9e2a0a8b-646b-4ee6-80ee-14f13a99c7fb/14634024155.pdf
    • https://s3.amazonaws.com/jejulurowev/add_and_subtract_fractions_worksheet_kuta.pdf
    • https://uploads.strikinglycdn.com/files/c16acb87-c9d3-46f2-90c8-72ad8eb00672/97295000032.pdf
    • https://s3.amazonaws.com/lanorolowu/php_formatter_visual_studio_code.pdf
    • https://s3.amazonaws.com/zurovajij/silazomef.pdf
    • https://uploads.strikinglycdn.com/files/dce3d79f-2fe5-44d9-8af3-270a9a9f30f2/13675706902.pdf
    • https://s3.amazonaws.com/rutufokedizon/76911835566.pdf
    • https://s3.amazonaws.com/benuka/weed_eater_38_riding_mower_parts.pdf
    • https://uploads.strikinglycdn.com/files/e6515c00-ef02-4eb9-9fc8-0f078d275c51/27964103047.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f14a.bin
f3376d7bc1f624169c42c291f0ab1dfe852117e59e04c1b301dfc94190f4ac1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF14A 5288 bytes
font_01_sfnt_off00010320.bin
c18149cc747d123055c5bc9ae955613cf87f58e86784b3de813cf0da1f05d931		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10320 10808 bytes

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