Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae64e0af446bd37f…

MALICIOUS

PDF

71.2 KB Created: 2021-02-19 01:37:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d7db1d865911ba4eafb5574f5ccc4259 SHA-1: 8fa3aefeb3f6ac769f1104cb0ca3cb24448d2831 SHA-256: ae64e0af446bd37f0f2bd89b4aafb7ce1fca2bf942d92977db2464cd7dece10b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=dwarf+druid+names PDF link annotation
    • https://volorizog.weebly.com/uploads/1/3/1/0/131070051/a2e6f.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/ehjjaje/13331445219.pdfIn PDF document text
    • https://sedezexe.weebly.com/uploads/1/3/4/3/134342112/d3fb01fe12394c.pdfIn PDF document text
    • http://redita.fun/t_l_c_ki_full_formh5do2.pdfIn PDF document text
    • http://ogranicbio.space/good_strategy_bad_strategy_free_downloadu0061.pdfIn PDF document text
    • https://gimitowogavu.weebly.com/uploads/1/3/4/7/134746983/9471560.pdfIn PDF document text
    • http://firolinulaka.22web.org/bahaddur_kannada_film_full_hd.pdfIn PDF document text
    • http://4bochki.ru/loperiribadesexomavanejibo0me.pdfIn PDF document text
    • http://repair-planshetov.ru/download_the_force_awakens7r7uu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/tunexu.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/voice_of_the_customer_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/bill_of_sale_michigan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/15044139162.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/latex_bibtex_cite_report.pdfIn PDF document text
    • http://wosamufudov.epizy.com/dubomoditu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF4 4804 bytes
SHA-256: 37544e778dac0d71c4ced5fa635734cd0b00289aec7818a69af6f07ac35eddee
font_01_sfnt_off0000e02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02C 9896 bytes
SHA-256: 1909f46aa627d1d9a1d1bffbb8d4b5abe066434e08478b9a298ca6090e1e59f1
font_02_sfnt_off0001020d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1020D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71