Malicious PDF — malware analysis report

Static analysis result for SHA-256 354b515bb2223b08…

MALICIOUS

PDF

65.6 KB Created: 2020-12-10 02:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: d7b01b27b162e0b618517b709b2c53bd SHA-1: da24dac99f1a3eaa0e985c3ac7f08ab18177a0de SHA-256: 354b515bb2223b08b74fbe87c8a79c2fbf2ca4105371e5c7784633533714df9c
294 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ggtraff.ru/wb?keyword=materiales%20dentales%20macchi%20pdf%204%20edicion In PDF document text
    • https://sifajovu.weebly.com/uploads/1/3/4/8/134874608/pudum.pdfIn PDF document text
    • https://pevexozu.weebly.com/uploads/1/3/4/8/134857768/sebakapenopexuviku.pdfIn PDF document text
    • https://ratopavitakam.weebly.com/uploads/1/3/4/4/134460251/vonokepuneruz_mufovisu_zavexeraxi_pujana.pdfIn PDF document text
    • https://kagivosivozavex.weebly.com/uploads/1/3/4/7/134746508/95529a841e845c.pdfIn PDF document text
    • https://temonobulap.weebly.com/uploads/1/3/4/5/134592988/a9367aab8.pdfIn PDF document text
    • https://nobixerevogug.weebly.com/uploads/1/3/4/4/134481004/zuzepakef.pdfIn PDF document text
    • https://navaraze.weebly.com/uploads/1/3/4/6/134682655/suxow.pdfIn PDF document text
    • https://bitebizato.weebly.com/uploads/1/3/4/5/134583528/jigodopeneloxowuni.pdfIn PDF document text
    • https://xukanimuwuvam.weebly.com/uploads/1/3/2/6/132696198/pekakon-xenaku-malus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5a7d55bcb0228a2a2fb4a/t/5fcbdce421c0486e91a129f1/1607195877164/24149856320.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/brainstorm_live_beast_bag_company.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18c699698b02c7f25315b/t/5fc507686457125654da31f1/1606748008419/dr_jekyll_and_mr_hyde_shmoop_summary.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf512008845d0924810c8a/1606373664760/sims_4_disney_princess_challenge_cc.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/set_home_mod_minecraft_1.15.2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0406b474932ca2689901/1606222855210/wash_by_william_faulkner_characters.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_off0000c25a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC25A 5488 bytes
SHA-256: 583f67db04b5e29988c8ba9f8e32657fcdb2b5bef871789ab5a8ae2c6ad3fa7b
font_01_sfnt_off0000d4ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EA 11044 bytes
SHA-256: fb9ea85d8b89d24d81739f383906c9094d0fa7ae69f27d31b5aed351689c05e6