Malicious PDF — malware analysis report

Static analysis result for SHA-256 70da3004ddbea6cd…

MALICIOUS

PDF

67.2 KB Created: 2021-02-20 06:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 135eb838c433643bc90b63ecdb7b9916 SHA-1: 5a32a1a97858212b660d304a2c8c25672e50bd15 SHA-256: 70da3004ddbea6cd47eff9a262c499bfa788730479c2573c87240b1202439dcd
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=sample+memorandum+of+understanding+for+nonprofit PDF link annotation
    • http://reactivaperu-viabcpi.com/9562723272mvxkf.pdfIn PDF document text
    • http://gsmall.space/nekamizakuva87op.pdfIn PDF document text
    • https://porujeworor.weebly.com/uploads/1/3/2/8/132814718/faxufadukaxamox-rurunuvatokeg-jozomufini-xibaxujal.pdfIn PDF document text
    • http://matteset-spon.space/kinat16zvt.pdfIn PDF document text
    • http://gatorama.site/ignou_mcom_assignment_2019_solvedv53di.pdfIn PDF document text
    • http://bonifacy.site/105671036605ndz6.pdfIn PDF document text
    • http://guvorib.22web.org/free_accordion_wallet_pattern.pdfIn PDF document text
    • https://loxutagunepolu.weebly.com/uploads/1/3/4/7/134763456/delozoti-jijamesodox-sawab.pdfIn PDF document text
    • https://tovunebutulewe.weebly.com/uploads/1/3/1/8/131871744/rijetabunaxulerev.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/abandoned_cart_report_shopify.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/mozilla_firefox_50_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/scratch_2._0_for_windows_7.pdfIn PDF document text
    • http://wirirarosutuki.epizy.com/online_name_correction_in_up_board_marksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/60245652175.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_off0000c9db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DB 5464 bytes
SHA-256: 7e0f49db9274677815c07a08cdd0ecf9f1b4f8c737775331de729c137cdb7a4b
font_01_sfnt_off0000dc51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC51 10456 bytes
SHA-256: 41d8bbc75a662533c8bfbb12ec9c2823acdeca872a5a439cfb5ddc121a08085d