Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3d2d6ca2c5b49d…

MALICIOUS

PDF

50.1 KB Created: 2020-10-25 23:10:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7c8d23c6d901ac00c8e93c5d6f390dd5 SHA-1: 1a2755cdbb6c07d9bc040c28d8206a4bddae0280 SHA-256: 7a3d2d6ca2c5b49dbc361084df54d6b0bc85b033cc19db692a4772aab6766470
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/strik?keyword=christie+dhd800+hd+dlp+projector In PDF document text
    • https://dafebifu.weebly.com/uploads/1/3/4/3/134399244/kexokijamejafox-ravosu-gitarodefagoro-wupudofoda.pdfIn PDF document text
    • https://xosetumigex.weebly.com/uploads/1/3/4/3/134371377/9796379.pdfIn PDF document text
    • https://gijakumode.weebly.com/uploads/1/3/4/3/134306186/d4411f71aa.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/ee736b022.pdfIn PDF document text
    • https://jorimedazaget.weebly.com/uploads/1/3/0/7/130738946/rajudanib.pdfIn PDF document text
    • https://jukovuwivoxufab.weebly.com/uploads/1/3/3/9/133997180/mokekonujatat.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/mosedixas.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/vitumot.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000071f0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000071f0.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000aae0.bin)
    • https://s3.amazonaws.com/zuxadol/47990895458.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/determination_of_acidity_and_alkalinity_of_water.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/35416071543.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/pneumatic_valves_symbols.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/jowaxakelabupidezikofodif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8109578-1fad-4c74-baf1-63684673a967/77878719183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bb8e2ec-e025-4c9d-b353-55f37a8d19a6/fuvetoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aabb5d3-7466-45e1-adcb-9de57d376988/82794853237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/959d1fe5-49b7-420c-8b00-e379f00ba3d7/rejafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8404/5219/files/katon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6190/3005/files/best_movie_download_app_for_android_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1766/1347/files/daguwulot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/unblocked_games_beat_your_boss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3962/1788/files/pasivos_contingentes_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7504/9878/files/gezosidemajawono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3881/6456/files/tukoditora.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_off000071f0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F0 5068 bytes
SHA-256: 94c612e06b73fcaa3a77fc614f1a86fa7b407dea23363e2a8797222a2c38abbb
font_01_sfnt_off00008343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8343 11720 bytes
SHA-256: a95264980978ffb19e82181f6e80363bac4f93644147fc86d79e8d8ef361f6b5
font_02_sfnt_off0000aae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAE0 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230