Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3561ece2f0f4e7b…

MALICIOUS

PDF

66.7 KB Created: 2021-02-17 19:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bfa3352611a0714f5c95e9934180c27c SHA-1: fb7648d299fdc411b655d553a42755af23f0abd5 SHA-256: d3561ece2f0f4e7ba4042b95f3ef4f1c21b7b2bae9357a7eb4f9b2c7fb8bc097
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://jacksth.ru/wix?keyword=togainu+no+chi+guide PDF link annotation
    • https://teligodinawam.weebly.com/uploads/1/3/4/4/134457670/90c865.pdfIn PDF document text
    • https://funexoxep.weebly.com/uploads/1/3/2/3/132303151/kipevudukaduse-wufakodefo-fidot-bomujisix.pdfIn PDF document text
    • https://diveziriluro.weebly.com/uploads/1/3/4/4/134447321/273f82.pdfIn PDF document text
    • https://vufosaxirit.weebly.com/uploads/1/3/4/0/134018891/vadusuwozi.pdfIn PDF document text
    • https://ripukalogud.weebly.com/uploads/1/3/4/3/134391837/54f9787.pdfIn PDF document text
    • https://cdn.sqhk.co/bulenupulabo/gic0VWD/zegizoxizuwogorilunebe.pdfIn PDF document text
    • https://lemefiware.weebly.com/uploads/1/3/4/0/134017231/lasutogi-nelupo-vunojiwirikumu.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/eLjb3J2/1246199054.pdfIn PDF document text
    • https://sovopedu.weebly.com/uploads/1/3/5/3/135301682/wanuzufugekinine.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/kezemiradigu/funitubelabalemopilalit.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/free_music_from_computer_to_cd.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/secret_santa_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/nopodisukozafome.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/221063061.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/beneath_your_beautiful_song.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_off0000ca7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7F 4844 bytes
SHA-256: f9775471f2835eedc4a320a4281787a0679d7954832caed28fec3cef45e0747b
font_01_sfnt_off0000daf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF9 10372 bytes
SHA-256: 6fecbd47700789fd3e113032e94f203afd33c6af91539e52815934a2d0cb2f6c