Malicious PDF — malware analysis report

Static analysis result for SHA-256 3356815f82a9ffab…

MALICIOUS

PDF

54.2 KB Created: 2020-11-06 02:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2d777ab83ff41f8ee040a8bf052a8557 SHA-1: c2978d77e20184d6395adb87aa3374d45ca818e3 SHA-256: 3356815f82a9ffaba46e11b6801344199e2d700c7011d2a4c7ed0ce0a0a3288b
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?keyword=weed+eater+featherlite+fl20+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f9c02e136dc1.pdfIn PDF document text
    • https://gojufoviwovefu.weebly.com/uploads/1/3/4/5/134515133/zorugubagalurularot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f8f449260390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412183/normal_5f9e6f9c61dee.pdfIn PDF document text
    • https://radutarogo.weebly.com/uploads/1/3/4/3/134379411/437506.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/bsc_3rd_year_mathematics_books.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/74022550814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bb80a83-7d2f-44f5-83df-5cce31f22f85/twitchcon_2020_eu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/657f5e60-9625-48fa-b0df-9755f9b1341a/24517177879.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/images_of_exotic_foods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac511ad6-1533-4376-9d10-d52d4ade0510/82324966131.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/ramukimovajated.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/791793c1-2f38-48c5-9bb2-f33b13d21121/back_scratch_test_shoulder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da99a0ff-da1a-437a-abb7-9f306576da10/options_as_a_strategic_investment_5th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0f584cf-a9cf-4808-bdfb-8a8279045b1d/mawidosawufaruwobogi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7502 5256 bytes
SHA-256: d8c171545ffc78e63cb82422ae4afd206c7af6377a3d3b0b75bc2178aea48e9b
font_01_sfnt_off000086c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C3 10660 bytes
SHA-256: e35b9c71864b0b2f7458b916378eadb88f3b32cc4ec6aec029ac3455b6a7697f
font_02_sfnt_off0000ab2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB2D 19728 bytes
SHA-256: b472f756627950d2511ab6ec37117693d7ed332941e2471ea9feb090f7ae82ae