Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5fadc88a93bcfa…

MALICIOUS

PDF

73.7 KB Created: 2021-02-25 18:54:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8094f98d67addd650626911368d68d2c SHA-1: 7cc1e54e1cbf226afa1142ac6c48950f8ff00fb2 SHA-256: 6b5fadc88a93bcfa0b4312fdbf030d5cc5e9733bd5cfd380d3ba87fd9bd2fa54
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://baarspo.ru/123?utm_term=hunter+lawn+sprinkler+controller+x+core+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383131/normal_5fc950d501027.pdfIn PDF document text
    • https://jorikumovitakus.weebly.com/uploads/1/3/4/8/134883246/4689641.pdfIn PDF document text
    • https://sutowuvo.weebly.com/uploads/1/3/4/6/134685384/58189.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405414/normal_6000d7835b4bd.pdfIn PDF document text
    • https://cdn.sqhk.co/joziroluxu/ePogfig/59761836963.pdfIn PDF document text
    • https://cdn.sqhk.co/juzosugun/djbbgB2/age_of_mythology_game_cheats.pdfIn PDF document text
    • https://zoredufuno.weebly.com/uploads/1/3/4/6/134638801/f623eb40a.pdfIn PDF document text
    • https://cdn.sqhk.co/sepunaro/i5mjgmF/the_cook_3d_cooking_game_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449616/normal_5fd3cce27805f.pdfIn PDF document text
    • https://cdn.sqhk.co/fosulavale/wmhdHgg/35998914557.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/ejbghgq/fitbit_inspire_2_bands_australia.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/jawusawar/10309304061.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/rbol_es_aguda_llana_o_esdrjula.pdfIn PDF document text
    • http://jevazebi.epizy.com/83017596689.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/77813839897.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/amazon_app__10.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/keystroke_logger_for_android_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/travis_scott_butterfly_effect_audio.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_off0000e320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE320 5264 bytes
SHA-256: 20c73068608f12112bd2381f54e85af6aa04e10d95f5c504ed83973983c3469c
font_01_sfnt_off0000f504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF504 11076 bytes
SHA-256: e5a255111243b6154cce9642763274f04dc404c856c381c8708ea807258fc3aa

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