Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcee5ddca01663d3…

MALICIOUS

PDF

66.4 KB Created: 2021-02-22 23:50:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2d15c2560ffb48e20de25ec723cb0c53 SHA-1: d980fef471476b9eb7e7938c78bdc0db851afc08 SHA-256: dcee5ddca01663d387b949bd9ef3320ca022e4c38b5076522496205110eca7e4
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://druttle.ru/wix?keyword=peacock+garden+cafe+brunch PDF link annotation
    • https://cdn.sqhk.co/girewobo/Jhajfjf/gefajirepavawavufofokije.pdfIn PDF document text
    • https://gimuloge.weebly.com/uploads/1/3/0/7/130775506/sitiv.pdfIn PDF document text
    • https://gekibevuzoz.weebly.com/uploads/1/3/4/5/134503907/bizitifo.pdfIn PDF document text
    • https://vunejodi.weebly.com/uploads/1/3/5/3/135382889/056647e5e.pdfIn PDF document text
    • https://muzikalojex.weebly.com/uploads/1/3/4/0/134012647/vifenumalezires-vibak-pukaj.pdfIn PDF document text
    • https://cdn.sqhk.co/wubukuxivupe/iegd2je/4323486936.pdfIn PDF document text
    • https://kanodofeju.weebly.com/uploads/1/3/5/3/135325650/495421f144b17.pdfIn PDF document text
    • https://ginekimef.weebly.com/uploads/1/3/0/7/130738874/zapilapozisolofi.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/kufazete/munubamu.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/the_bluest_eye_google.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/9376079420.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/nezakijakolusikuvaxogunu.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/binomial_theorem_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/fotemoj.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/regrouper_plusieurs_fichiers_en_1_seul.pdfIn PDF document text
    • http://tuzekejaxegis.epizy.com/best_marvin_quotes_hitchhiker_s_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/50516042185.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_off0000bb26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB26 5032 bytes
SHA-256: e91452cdd1876f74d535b1a99e5b077997cf3a8e19cc8abb5a2cc888dfb29edf
font_01_sfnt_off0000cc30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC30 10116 bytes
SHA-256: 6f13c8f941a66f36974c0e26d0c1b37be3522bf202bb646b08903e439aedfbfd
font_02_sfnt_off0000eedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDC 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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