Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c8b56fec44f4200…

MALICIOUS

PDF

73.1 KB Created: 2021-02-28 23:08:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 25170197b8c2864c483b11c035c7d37c SHA-1: d0c50757cff8171f925379958e216d34ab8e0243 SHA-256: 3c8b56fec44f4200dc44357f8f7523dd1759197b07c510685dc3882acf416d26
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/wix?keyword=baby+waluigi+mario+kart PDF link annotation
    • http://lodijijewotiviw.iblogger.org/how_many_amps_does_an_air_compressor_draw.pdfIn PDF document text
    • http://rent-nout.site/ne_me_quitte_pas_lyrics_edith_piaf4s2b3.pdfIn PDF document text
    • http://help-feedback-amzn6.xyz/turezumikupusepivevuzexis2ppla.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/how_to_propose_a_case_study.pdfIn PDF document text
    • http://pewodaz.22web.org/bajojawixamenibamaravexes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444623/normal_6000f6ef0dac0.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/vaxebisapesi/apowersoft_photo_viewer_exe.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/48707948750.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/cub_cadet_lt1050_snow_blade.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/budom.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/how_to_check_internet_explorer_history.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/10285779224.pdfIn PDF document text
    • http://dadagax.epizy.com/how_long_does_a_gopro_4_battery_last.pdfIn PDF document text
    • http://xonifovozub.epizy.com/brochure_template_microsoft_word_2007_free.pdfIn PDF document text
    • http://mizuselafu.rf.gd/67590736330.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/free_artisteer_with_serial_number.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_off0000e22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22F 5272 bytes
SHA-256: 036342ae43cb2a1bf16beff3fedaf719e468e0733030d120d391d8d92e5f0f91
font_01_sfnt_off0000f428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF428 10656 bytes
SHA-256: 20026a195f7149d896d73f19f58dafcb80830b6821cd218fba0c0b7c670a9aff