Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc2d482f32ab4e3…

MALICIOUS

PDF

48.3 KB Created: 2020-10-29 01:47:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: b52b176e514f315d1008e8f59ff73d5b SHA-1: 4c5a8554e772cb083d875b894d5bab1ecee898e6 SHA-256: 1cc2d482f32ab4e3bd1d260779e297c4ba97d06a55a64634f7e2a7c90ecb80d4
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=water+distiller+amazon.ca In PDF document text
    • https://nokiziwevapof.weebly.com/uploads/1/3/4/5/134507241/ziliv-rozifejexa-jeluviri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5f949235ec317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f872f02174cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5f9201d6618c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5f8a887e741c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f8abbf58e8db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417024/normal_5f99ebdcad92c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f90ecde17587.pdfIn PDF document text
    • https://pirivelel.weebly.com/uploads/1/3/4/5/134505874/da08b1d34fa.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/zirij-kijaj-dajad-saretaxi.pdfIn PDF document text
    • https://feloxoxux.weebly.com/uploads/1/3/4/0/134000485/liwodem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_5f8ca6f073086.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007dee.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007dee.bin)
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/frp_bypass_apk_android_7.1.2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91703032-b766-45a0-bda1-c038a8d207ac/disajuzuzusakimosisamakof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db34acad-fe78-4193-a1c6-29c039357f37/79076742458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/520f953b-4a2b-4c0b-8005-fdc7da418fbf/6114841747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0535c1b0-2e4d-48bb-8641-d17284ed2fc6/27014359055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/9177/5654/files/cartoon_face_apk_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0537/3379/files/cooking_wine_osrs_guide.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_off00007dee.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEE 5180 bytes
SHA-256: efdd37d944c55d5b3eaa3b4887df5d3993fae17282cf12b5666e858ca96cf5e9
font_01_sfnt_off00008f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8D 10532 bytes
SHA-256: 304b3753f23f75ba25ca2984b0442e17db529e35c8c7cd32001164969603136e