Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab370ed5fd2d81f…

MALICIOUS

PDF

80.7 KB Created: 2021-03-03 23:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e999ee8111c14a7d3a7596023fdd93f0 SHA-1: cdc1ef6a1e5e6cf2fc5ecf504e52f4f08b21c7af SHA-256: aab370ed5fd2d81f9a91ac8602f05f473d36478eee0d01cc0a718a296502a257
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://dafemum.ru/123?utm_term=does+vegetables+have+calories In PDF document text
    • http://eeuuurrrrr.space/2146933467491c0p.pdfIn PDF document text
    • https://zerakilun.weebly.com/uploads/1/3/2/6/132695460/pagilumabemowagami.pdfIn PDF document text
    • https://bevemobuzaza.weebly.com/uploads/1/3/2/6/132681194/demojusevovuzopup.pdfIn PDF document text
    • https://xuxasogunoniku.weebly.com/uploads/1/3/1/8/131856570/nuxusapejovetiz-ronudabekituwof-pedowef.pdfIn PDF document text
    • https://gelixilononusi.weebly.com/uploads/1/3/0/7/130775878/5576032.pdfIn PDF document text
    • http://robinmani.site/fedex_tracking_number_example_on_label85g3z.pdfIn PDF document text
    • https://cdn.sqhk.co/kuretunaba/ceVYZsG/202257248.pdfIn PDF document text
    • https://buxodofuluni.weebly.com/uploads/1/3/4/8/134875319/ruwif_zunirelipefep_gafar_mufut.pdfIn PDF document text
    • http://dvigatel.guru/32308051054ygxvj.pdfIn PDF document text
    • http://vash-fasad.live/40722051851dog62.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/gfjjXP3/galepotudap.pdfIn PDF document text
    • https://buporinedo.weebly.com/uploads/1/3/4/0/134041533/xotuwadop-riwuwinutiwifit-nadodu.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/padadutiseni/free_anatomy_software_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/boxikobigugosumo.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/vasagefis.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/impact_national_geographic_learning.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/dumapigexafu.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/duliduwabel.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_off0000ff3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3C 5260 bytes
SHA-256: b576df7cc104bbf23673bb55f4e139e647ca6f63e0d9bf5e4fa2ae15d43ad7f7
font_01_sfnt_off00011126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11126 10868 bytes
SHA-256: 823dc5059e850491a95df3038c129a6087214d26f39823ad72978a865771159a

Open this report in the interactive analyzer, or submit your own file for analysis.