Malicious PDF — malware analysis report

Static analysis result for SHA-256 daaebcdd9ab136ee…

MALICIOUS

PDF

41.4 KB Created: 2020-11-08 11:44:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 327e2fe27ed8b837ed345007c8db6814 SHA-1: 8c62141d3d399877ef0970610fa388e27412e7ab SHA-256: daaebcdd9ab136eef0b130ac81b1fcf16e881af9e15698a636ad17a3f7f9b35d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://traffset.ru/123?keyword=driver+license+number+on+michigan+license PDF link annotation
    • https://zabonipe.weebly.com/uploads/1/3/4/4/134487368/xepit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3599749-f900-4fdf-a46f-2c45167b7a70/87449350832.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97cc971b-ef48-4b8b-8a84-57be8eee4581/exo_mountain_gear_k3_4800_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/gavezuxikosikigizofoka.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/samakewi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63591911-ee59-46b7-9675-2b485f27f5cf/bekuwagoxalebe.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/anualidades_diferidas_vencidas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1755b20-f146-4f74-8065-77229bbada13/the_48_laws_of_power_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049991a1-ba1f-4ba0-9f55-8876ca8f166e/32287319346.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/summertime_saga_apk_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/84417538456.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/battery_operated_blender_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c74a163-3942-4eb4-8a61-f1a23e3a9e2d/57111655135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5cc99c3-a7d7-4b73-baa7-dfe5b50666b7/55850027400.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_off00006084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 5412 bytes
SHA-256: 7965a0cddaa10e3713337e450d7770cf728a48985aae6000b5cfe91fc36437b1
font_01_sfnt_off000072cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CC 11316 bytes
SHA-256: 4d35935b9ba688283998e9a16aac11dc79c7ee3c19152994ed46645d309a572d