Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b10a78cec9d0127…

MALICIOUS

PDF

71.1 KB Created: 2021-03-02 14:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3637dd5ddc9929b312412a801cfcb316 SHA-1: 4aa01382733f9aed24fb52d299cf87326e962279 SHA-256: 0b10a78cec9d012746ec4f3eca1756dfeda93457e0d64e9e06a7fa36aece0d46
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/award?keyword=is+there+a+4th+generation+echo+dot PDF link annotation
    • http://raftgjgr.space/fnaf_silver_eyes_graphic_novelojuf0.pdfIn PDF document text
    • http://shtangennstutkupitseychas.xyz/copper_scrap_prices_york_paxwthl.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/jajEjjg/marvel_realm_of_champions_download_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416935/normal_5fc5c7b7e1425.pdfIn PDF document text
    • https://cdn.sqhk.co/bipozipo/e4hcjf2/23183396543.pdfIn PDF document text
    • https://cdn.sqhk.co/naxaroja/eyQ0dhf/movie_trivia_quizzes_buzzfeed.pdfIn PDF document text
    • https://cdn.sqhk.co/goronikel/hejbLFY/17919451985.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/muvojugejoxip/panasonic_viera_42_inch_plasma_tv_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/delonibivakevubog.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/nupobikadefavavomakal.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/best_duas_of_prophet_muhammad.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/whatsapp_messenger_latest_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/lagu_ending_baka_to_test.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/zrana_luka_zagreb_informacije_red_letenja.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_off0000db11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB11 5196 bytes
SHA-256: 3be0e11e43120ef378b2bee522270dce1349e959a7f4b91b5526175ca123dbe1
font_01_sfnt_off0000ecb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB9 10388 bytes
SHA-256: 63a7f4fb75318d2a183962b197e5451352e2b63048641fe21706b28e376b3ba4