Malicious PDF — malware analysis report

Static analysis result for SHA-256 7627f69539127fd5…

MALICIOUS

PDF

47.7 KB Created: 2020-10-27 06:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 605a01aefd491b7863bd42526784af82 SHA-1: ca2df0d88c426b9bda9839a18b069899504c87bf SHA-256: 7627f69539127fd506d987f9d1d9e8b0c76304f2a37cce60bca64a26f1866fc4
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=mr.+tumnus+tells+the+child+that In PDF document text
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/dimigete.pdfIn PDF document text
    • https://jelamiwigu.weebly.com/uploads/1/3/1/3/131382248/womikiw.pdfIn PDF document text
    • https://voxapinave.weebly.com/uploads/1/3/2/7/132740917/tevonesumijix_bimujuzodaker.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1823360.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/zakeme.pdfIn PDF document text
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/28988affc123d.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/9755103.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00007ad2.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00007ad2.bin)
    • https://s3.amazonaws.com/henghuili-files/64751811866.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/apiculture_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/91924887463.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/rotepividuzigegefumovibab.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/components_of_ms_word_2007.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/18894942789.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/zodolatiterewujoburixadew.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/bmtc_bus_routes.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/koxetukadusitila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/babba406-40b8-410e-a46e-a391bdfc042c/genogezijet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34164ece-b17e-478d-90c2-9e50df7a783f/23604407696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afa43dda-2bf0-4f50-b2f1-da0234bf4157/92135071476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f8d7f30-f139-496a-82af-bf231769916d/10141326144.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 extracted file (font_01_sfnt_off00007ad2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7088 2888 bytes
SHA-256: daa464992833498aeea8162072d590ce607b5a38febd641a4b4e7fef94ab354e
font_01_sfnt_off00007ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD2 5216 bytes
SHA-256: a051bb19ccadef8558e39691ad0a04d448985e77b69285612195caa93c7ccf0f
font_02_sfnt_off00008c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C60 10724 bytes
SHA-256: 93685332e1951c72e43c00961d619b3ceddd63a3ac89a3a3aabf8b7bf2f8aedb