Malicious PDF — malware analysis report

Static analysis result for SHA-256 c979aa8bdddeda29…

MALICIOUS

PDF

104.7 KB Created: 2021-04-26 05:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 11988bb84e6abfccd65e23a4bb7353ec SHA-1: 2eccd0cfaa146ef586354b1d40bb6aee7a0f2146 SHA-256: c979aa8bdddeda292703ebfe0a42eb1533fecc6a1cd19418da856474446b82ef
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, with one pointing to 'ponafet.ru', suggesting a phishing or SEO spam campaign. The embedded content, though heavily obfuscated, likely serves to facilitate the redirection to these external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://ponafet.ru/strik?utm_term=why+do+we+not+wash+clothes+on+thursday PDF link annotation
    • http://selozufuwadapuw.66ghz.com/punuritomagererivoje.pdfIn PDF document text
    • http://veraxibowamopax.iblogger.org/2020_polaris_rzr_xp_1000_service_manual.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/tumasun/jopotugizewemubitisu.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/49025087546.pdfIn PDF document text
    • https://6a1e2a5f-c456-4288-b9d5-5378f87870fb.filesusr.com/ugd/076fac_03393ce7056a4c9e9d21eeb815df68c7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/john_deere_d140_service_manual.pdfIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_b1fe943ba8df40cbb7e975b2aae0ab8e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/30507005776.pdfIn PDF document text
    • http://zomojafo.epizy.com/82423081298.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/debuw.pdfIn PDF document text
    • http://jiwodasovizo.rf.gd/85767873386.pdfIn PDF document text
    • http://vosivasagibil.epizy.com/sipezebezigowexita.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/how_to_decide_if_my_marriage_is_worth_saving.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/nunaxokilulo.pdfIn PDF document text
    • https://3d3b31fc-6152-41c7-b1d4-a4af3afcce63.filesusr.com/ugd/3f8d85_d7a6972e492b4ae28ccb8e0ff60af9a3.pdf?index=trueIn PDF document text
    • https://7e073981-ad1c-4081-8dc0-76946ba36063.filesusr.com/ugd/c4f63d_02e68059242e4df384fc86b5f2f7918c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/sifekapipolovejoro.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/jonuzepebonaxedubi.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_off00015a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A4D 5232 bytes
SHA-256: ea95ec7e82df8eac174338b908c15bc583284600509b972b9ca2160adacb86d2
font_01_sfnt_off00016c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C2F 12576 bytes
SHA-256: 66fcbd7dc503d7526ba4b5288bafd60b52b6b1297f1861ef2211999e842e6f7a

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