Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f90e4207776fa18…

MALICIOUS

PDF

68.4 KB Created: 2021-02-14 19:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e7295c42f87daa8a4b8a54ec43810839 SHA-1: 24c112a8f6e4c8dd98188a912441a79392b8997b SHA-256: 3f90e4207776fa18be1d9de5335a0c2bf4ed13a365c94670460fe1d0934d4a27
144 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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wix?keyword=wbs+dictionary+template+excel PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381788/normal_5feb5af61373d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471109/normal_601a40bae9df1.pdfIn PDF document text
    • https://vowevabejera.weebly.com/uploads/1/3/0/7/130775986/4432355.pdfIn PDF document text
    • http://help-copyrightservice.xyz/embryology_ppt_templatea4kkf.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/ha9Mjfd/planet_fitness_locations_tucson_arizona.pdfIn PDF document text
    • http://classkaod.ru/the_grapes_of_wrath_study_guide43en7.pdfIn PDF document text
    • http://gobigs.space/rosudivejireniganimi3l9lm.pdfIn PDF document text
    • http://arevakar-travel.com/77106410586nzjxr.pdfIn PDF document text
    • https://pubegole.weebly.com/uploads/1/3/0/7/130739090/2259eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529024/normal_5fe4b503b818f.pdfIn PDF document text
    • https://cdn.sqhk.co/fomeluxilim/jhtgdg7/basketball_black_and_white_photography.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/haidDZD/the_bucket_list_family_cinderella_castle.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493227/normal_5fce64a1110c5.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/vovuzize/22229430390.pdfIn PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/77366289501.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/kipuxilewa.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/activesheet._protect_vba_example.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_off0000cf6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6B 5540 bytes
SHA-256: d770c8bfa6f4205a7eb4ebc94d4543331a0454285bebab38c44c2fba785135f6
font_01_sfnt_off0000e241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE241 10196 bytes
SHA-256: 52a6336f976030cc560b84e2de3c380a36ca8663bcd6382a11a60f1f5ed65219