Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f072559091bc48…

MALICIOUS

PDF

68.3 KB Created: 2021-01-31 13:08:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a8878bd9c1eea7e29f1bd2aff1faa2d4 SHA-1: 93341dc08fa0b90bf04bc689d1e974d970057e02 SHA-256: 65f072559091bc48e6ad152f647f097d08aed1ea967f95412bc2e413b961b2e3
136 Risk Score

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
  • 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/square?utm_term=capitalist+realism+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425726/normal_600c7bb17c6c4.pdfIn PDF document text
    • https://cdn.sqhk.co/wejuladuke/jc723ih/13224299838.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411701/normal_5ffb16c0c8fc2.pdfIn PDF document text
    • http://zexawil.22web.org/stony_brook_medicine_email_format.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/ieheueP/pufizarulababakomegil.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/4ghYdLO/felumozuk.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzexesetaba/kVvjibC/baby_pet_care_game_cute_virtual_pet_friendly.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387715/normal_5ffae28a900f4.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/MNhh3je/27541260675.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467043/normal_6015c8bc72499.pdfIn PDF document text
    • https://cdn.sqhk.co/fomeluxilim/wgiHFkw/gmod_game_engine.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/4PhfgdQ/mens_hair_short_back_and_sides.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/buponuwebi/renedaviremubor.pdfIn PDF document text
    • http://beluguliwiwe.epizy.com/friend_philosopher_guide_meaning_in_marathi.pdfIn PDF document text
    • http://redapisepiwu.epizy.com/cryptococcal_guidelines_idsa.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_off0000cf78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF78 5092 bytes
SHA-256: 13cca48b64009c8118e647441bc22029766c271175a08898c940c9fe92e722e9
font_01_sfnt_off0000e0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AC 10612 bytes
SHA-256: aabf3b388b6ac19a58251419af03eed8520707801bf89f61160dbfcb66881f2c