Malicious PDF — malware analysis report

Static analysis result for SHA-256 a65baa5a31649e81…

MALICIOUS

PDF

73.9 KB Created: 2021-01-10 21:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 07695a4733dd3959613977069bb8874e SHA-1: 560f812b67b3b312981b0bb7b9270710658b9026 SHA-256: a65baa5a31649e810bc5d1ab58e9e7ec34a617eaec3277ffe07388f988982c3d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://gettraff.ru/wb?keyword=how%20to%20make%20a%20bowie%20knife%20razor%20sharp In PDF document text
    • https://cdn.sqhk.co/ferudati/8jfbGPz/ohio_copperhead_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/eLheifd/w3schools_css_color_palette.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/IVzic5t/poxilifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475988/normal_5fb449d301836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454541/normal_5fd1d1df25366.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/jboYhiN/15262536359.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/sevoga/jexijanazetowulufiworuz.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/61972405337.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/indian_international_airport_list.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/libozepikow.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/goods_receipt_report_in_sap_tcode.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/xabubixalirovelamudit.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/blue_eyes_full_audio_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/jekubasepitobexagiv.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/37995288001.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE420 5416 bytes
SHA-256: 99f4e0abe63c14de8174bb31d4ff904d1733becf59d64bd2d5c1b21a7fb42f39
font_01_sfnt_off0000f674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF674 10664 bytes
SHA-256: 85b05c758ca03d51cc661e71caad35512250be0440e6e9052427123da7b17a81