Malicious PDF — malware analysis report

Static analysis result for SHA-256 6acee5005791f2bb…

MALICIOUS

PDF

71.5 KB Created: 2021-02-22 14:28:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 01d35030ea1955ce21fbe7c382687092 SHA-1: a982214b2dc0a8cc8c2a542a97d71b81ef4ce5fd SHA-256: 6acee5005791f2bb1500eb6257f69e2111d58f10eb43593fb5a2dd22371bfc69
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://jottigo.ru/wb?keyword=fundamentos%20tecnicos%20y%20tacticos%20del%20futbol%20sala%20pdf PDF link annotation
    • https://kazimiposaduvab.weebly.com/uploads/1/3/1/1/131163956/lujaj_zogesuro_wapubenapa.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/gfgfjdS/51847624302.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/g6gggeu/58094371354.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458148/normal_5ff80379dcdce.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzaxepigi/bHgjgdU/42750786907.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367642/normal_6006ac488cff3.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/eghUfid/entergy_bill_pay_online_ms.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367941/normal_5fddbec221673.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443610/normal_5fef59d45e19b.pdfIn PDF document text
    • https://roguvajodanuk.weebly.com/uploads/1/3/1/3/131379692/f7c29d7.pdfIn PDF document text
    • https://cdn.sqhk.co/zadoweferoxe/gejhwf4/394297286.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxinugad/cJgiVgh/7286742675.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/fixararololu/android_screen_capture_app_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/wassce_2019_geography_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/alarm_clock_xtreme_pro_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/40082661581.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/deretiguga.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/blindness_disability_information.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_off0000daf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF0 5404 bytes
SHA-256: 53ee71c72b71299450b118c97abb3df51f7274e27ab5e94832dfe0b003b2ae3b
font_01_sfnt_off0000ed4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4C 10480 bytes
SHA-256: f2473944417f1dd03eadeae0bfdfb26b30ad6216eb446cdefbb415129f6d2bf0

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