Malicious PDF — malware analysis report

Static analysis result for SHA-256 981533dcf536655e…

MALICIOUS

PDF

73.1 KB Created: 2021-02-23 09:36:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b182a21cc10e3a0000190767212522ef SHA-1: fdeb4f86cc4a0cab009c17de750c2235e697741b SHA-256: 981533dcf536655e502cb280ae8089b29b5edd228d0021ed21ec51b9ebc99b1e
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://baarspo.ru/wix?keyword=pac+man+apk+old+version PDF link annotation
    • http://all-gopro.com/blanchard_macroeconomics_7th_edition_freeiqray.pdfIn PDF document text
    • https://sevezumu.weebly.com/uploads/1/3/2/7/132710575/7721256.pdfIn PDF document text
    • https://sozivaxuzafuzi.weebly.com/uploads/1/3/1/8/131856435/7258342.pdfIn PDF document text
    • https://darenufu.weebly.com/uploads/1/3/1/4/131438483/3a348.pdfIn PDF document text
    • http://kindraretterath.com/the_metamorphosis_themes_essaypzos7.pdfIn PDF document text
    • https://lozibojugor.weebly.com/uploads/1/3/1/0/131069840/7600616.pdfIn PDF document text
    • http://mivamoxejepije.iblogger.org/83157847964.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/limepusotanal/game_of_thrones_android_play_store.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/2013_dodge_avenger_throttle_body_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/sitituxepuv.pdfIn PDF document text
    • http://toxodetu.rf.gd/sotebasuximuxopen.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/34365163618.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/how_to_make_her_fall_in_love_with_you_everyday_messages.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/pebirumanebivefaga.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/door_hanger_template_png.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/47123385126.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/putezapanak.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_off0000d8ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AC 5344 bytes
SHA-256: f750e5d60de6927e21dff43236302b06d132acf69b3136599dd7ebc1da7b092a
font_01_sfnt_off0000eaca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACA 14244 bytes
SHA-256: 8c7c412652fb50abb9bef59c1a13e0c5765eb8922d2c12da136269701f981a23

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