Malicious PDF — malware analysis report

Static analysis result for SHA-256 6afaa636a4e39fbb…

MALICIOUS

PDF

72.1 KB Created: 2021-02-22 11:38:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fab77478bfe9dbf9d689a9f5a02f11d9 SHA-1: 22d4cb289a2c55b5c985016921198ed90df37924 SHA-256: 6afaa636a4e39fbb3807d49f685dc76b33a7d69ba3ab9088f0a7d468b0b46e18
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wb?keyword=cuisinart%2014%20cup%20programmable%20coffee%20maker%20parts PDF link annotation
    • https://cdn.sqhk.co/lilanoto/Ghchfkh/gowoparegitipebujulut.pdfIn PDF document text
    • https://buginibonimej.weebly.com/uploads/1/3/2/7/132711973/9172210.pdfIn PDF document text
    • http://scarcebook.com/526438760195tkqk.pdfIn PDF document text
    • https://cdn.sqhk.co/saligoliti/7svmgc2/97676213650.pdfIn PDF document text
    • http://crysety.xyz/50790417539vwf9n.pdfIn PDF document text
    • http://agent-spv.space/duo_therm_rv_air_conditioner_thermostatf74s1.pdfIn PDF document text
    • http://kibizife.iblogger.org/skype_for_mac_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/vomawoko/2hghaKo/tifit.pdfIn PDF document text
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/1245914.pdfIn PDF document text
    • https://wozibasibif.weebly.com/uploads/1/3/4/8/134868806/mawaberedasazilex.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/fejatepudopito/2839261530.pdfIn PDF document text
    • http://xesidif.epizy.com/crank_ellen_hopkins_series_order.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/33097336307.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/xunobupijuxevafoxak.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/mandatory_reporting_colorado_phone_number.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_off0000dabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABF 5584 bytes
SHA-256: 905472461937754b592684736ec029b2a5857730bc1045a430666fc26b585980
font_01_sfnt_off0000edb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB8 11052 bytes
SHA-256: 5630ce5dc39b937bc3eee79c016c6f5b9c94296328d7732ac2ba572cf1ba8be9