Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00335702107241c…

MALICIOUS

PDF

58.8 KB Created: 2020-10-19 02:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9ac9885ae43d1b18b812d3e5985e7024 SHA-1: dae3a0d7b81b92faae9fa26b0057909fb68ae835 SHA-256: e00335702107241c50fcba0dacef60d6db4d740f4e86ead94548687080d8471e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/123?keyword=sumitomo+paramax+gearbox+manual In PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/6204283.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/jazoxulipube.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/dufegozaliv_gazawibenasa_viguvupukuba_xafamogo.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/78aa168b.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/aea14f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f8762839d8ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f890dfb5f10b.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8791/3653/files/android_ndk_environment_variables_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1518/3777/files/jitunewagokoxulup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/definicion_de_derecho_internacional_publico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe7119e6-0421-4977-a3f2-00c15e837be7/58039424316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2860ebfd-50ff-4071-a87a-506f60d5597e/ripisepavopunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7731d42e-2e56-40f4-8aa1-5555658afe9f/lakafave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4452/7525/files/vuzedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4155/7146/files/is_dr_dre_actually_a_doctor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8527/6357/files/34318828558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0877/7118/files/57725793262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/45608599782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7778/6530/files/symbols_of_friendship_in_nature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9751/3892/files/satellite_signal_meter_price.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4306/4474/files/classification_key_worksheet_ks3.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CB 3260 bytes
SHA-256: d28388b3d340d9a87c7595a0819203ccf591b406bae36ec9d99b32886d621fdd
font_01_sfnt_off00009272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9272 1768 bytes
SHA-256: 7b9c1ad248dcaef01c7adb4df71c22141da68cde87cc5ccff7cadb2d821898f4
font_02_sfnt_off00009b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B18 5272 bytes
SHA-256: 5322bd917faefdb1beb4d413e3a39d60257400d64b6fffa4ca3f8152d3ff9a20
font_03_sfnt_off0000acf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACF0 15424 bytes
SHA-256: 9a72ab5c4f8be031a3a1f21928c287181469d34b86053bb7c55af68f6002d61f