Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d1abaa0094b7f3…

MALICIOUS

PDF

72.7 KB Created: 2021-03-03 03:36:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bc0cf3e6dafb96fca5468d91bdf65881 SHA-1: ac5005ec01f14dc7a95ce0825422ab2050a3db95 SHA-256: d8d1abaa0094b7f3f8d08fa576b8269bea45aeb532aa65d681dc854e19d41adc
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/wix?keyword=clients+for+minecraft PDF link annotation
    • https://tarosukawumoteb.weebly.com/uploads/1/3/4/6/134691059/82e59bbb4e6c41b.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/lather_and_nothing_else_main_idea.pdfIn PDF document text
    • https://cdn.sqhk.co/lixipadiwel/xifOAA8/wobudepubebegerati.pdfIn PDF document text
    • https://cdn.sqhk.co/bojodunaluko/gPhSgcn/nudives.pdfIn PDF document text
    • https://vuwapelenepaje.weebly.com/uploads/1/3/4/7/134705438/50447.pdfIn PDF document text
    • https://cdn.sqhk.co/biposuba/MKha2gj/36219319208.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/8DjHjil/54862055481.pdfIn PDF document text
    • https://pasadaxadug.weebly.com/uploads/1/3/5/3/135390708/9762388.pdfIn PDF document text
    • https://doxavigefixo.weebly.com/uploads/1/3/5/3/135391607/766259.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/fekife/plasmodium_life_cycle.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/13627542128.pdfIn PDF document text
    • http://lizuruvabeg.epizy.com/dapelibekuditawogukefawax.pdfIn PDF document text
    • http://badetez.epizy.com/why_jelly_beans_are_bad_for_you.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/bushnell_yardage_pro_sport_450_review.pdfIn PDF document text
    • http://tipipigi.atwebpages.com/kogaf.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/sudoratimutujubu.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/falefotof.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/chrome_canary_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/why_is_my_hp_printing_blurry.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/google_duo_video_calling_app_ringtone.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_off0000e269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE269 4932 bytes
SHA-256: 5df54539c764146103e3991f5f2ae9e888e1b010706a06015f80660427e8fbfc
font_01_sfnt_off0000f315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF315 10184 bytes
SHA-256: b611bf35d4aa0a9aeae3dd016081a36536b4fa192508dc08e42a6e8023a1020c

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