Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a2cb2aeb8c894ca…

MALICIOUS

PDF

39.7 KB Created: 2020-10-28 18:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: cddcc08aa12889b63cbd9be949b12872 SHA-1: 246ccde734dbea44df0951590f58b22c6fe76a46 SHA-256: 1a2cb2aeb8c894ca88ce3656010b0d2da549766f25f4ea598d292cbcbc21953a
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/aws?keyword=grand+crime+city+mod+apk In PDF document text
    • https://miburinu.weebly.com/uploads/1/3/4/4/134464577/7af4e77d5b8.pdfIn PDF document text
    • https://fusesekomufe.weebly.com/uploads/1/3/1/6/131606177/xasagezilux-lipozage-vetenoririwovol.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/1911800.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005b17.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005b17.bin)
    • https://cdn.shopify.com/s/files/1/0436/1804/2018/files/pc_4_unit_limits_of_sequences_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/005c6385-6cb9-40d4-8c57-eb464e6637ee/catia_v5_documentation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/435b8b35-99bf-4c73-877f-f30ae31e4ee8/ejercicios_de_las_vocales_para_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5020/3816/files/13636986235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd8f70b-ce5a-4647-8c20-d8a32d31a136/the_lords_of_creation_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2730/2053/files/take_me_to_church_hozier_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb34b7e4-0760-4bce-9d6a-db09849a68ff/abbyy_finereader_11_serial_number_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf4b3df3-38a1-4e50-a4a9-a1614b401ba4/13162381674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6976/7321/files/terrarium_apk_no_ads.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e8fb09-a29a-4806-bd5b-e94cdbc4e8c1/hp_photosmart_6515_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91688d41-9958-419a-bf4b-623817b9bbd8/64294137561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1196c34-cebb-47f8-af4c-ab5160bda4f0/xasasakutenawodasonitadon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/xusupawiwovelagunixej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2db2755d-47f8-4db8-93b6-723d45549c35/87211640417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1016/5416/files/25258429019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b78177-85fe-44ef-8bfa-6ff05b7e6d4a/88630981176.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_off00005b17.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B17 5208 bytes
SHA-256: bf63019c9f6e1fff4fcc45f2b7e1ee2409b030eeeb562f4f801c99637b7ae05f
font_01_sfnt_off00006cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC7 10668 bytes
SHA-256: 8155f5b42e7874b794d356652a1cd832bd7ceb608636859554f768fb10c3464b