Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cde2267a811ebe4…

MALICIOUS

PDF

43.0 KB Created: 2020-10-29 06:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d47bf007bfaf3e090e8ccf860dd8e05d SHA-1: 1f7b7b13ee1e07ff2c9f233ca1a7f7751d277f0b SHA-256: 9cde2267a811ebe48dbeb56beabefecc53cfa22de18d8ab0c33f29a04b8f49e9
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://cctraff.ru/pify?keyword=north+star+charter In PDF document text
    • https://wigotimobegevuj.weebly.com/uploads/1/3/4/3/134312632/cc48cd10.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/gufiz-bimugil.pdfIn PDF document text
    • https://radisowe.weebly.com/uploads/1/3/4/3/134366404/7e6585a74.pdfIn PDF document text
    • https://piziruzebizopu.weebly.com/uploads/1/3/4/3/134350425/9a9d26ff3b.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/3796915.pdfIn PDF document text
    • https://koxabiwepa.weebly.com/uploads/1/3/4/3/134309970/6818083.pdfIn PDF document text
    • https://gizarokidobibaw.weebly.com/uploads/1/3/4/3/134363860/4ea5ec4.pdfIn PDF document text
    • https://pixabetamomu.weebly.com/uploads/1/3/1/0/131070001/kuvono.pdfIn PDF document text
    • https://gukijofajileraw.weebly.com/uploads/1/3/4/3/134392650/6283903.pdfIn PDF document text
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/dekek.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/58d05bec4.pdfIn PDF document text
    • https://tegugozitofo.weebly.com/uploads/1/3/0/8/130874592/riduzoxupogevifod.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006a92.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006a92.bin)
    • https://s3.amazonaws.com/wipotegadodorek/valve_amplifiers_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/wedemisewisi.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/shwedagon_pagoda_history.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/40804328936.pdfIn PDF document text
    • https://s3.amazonaws.com/tefelaj/percy_jacksons_greek_gods_read_online.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/niredusekagamonuwipo.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/mahalakshmi_calendar_2019_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/horse_craft_download_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5882/1285/files/city_of_dallas_permits_greenville_ave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/likitawalom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8937/2329/files/xeruxenege.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 extracted file (font_00_sfnt_off00006a92.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A92 4824 bytes
SHA-256: 6f666eefbf747ef8fda6a88851be502427dccbb8d9a669d42dcd6a36beea1e7b
font_01_sfnt_off00007af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF5 10352 bytes
SHA-256: 03fd1f2d39733fa6b964ffdd464201b5c5f96da0c397fb6dfb56b6b6e6b345ba