Malicious PDF — malware analysis report

Static analysis result for SHA-256 9717e91ec9110ead…

MALICIOUS

PDF

52.6 KB Created: 2020-10-07 01:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: af612bb660cb3b03936759ab00e23e41 SHA-1: ec98ba715e987ba8d4e32a709569bc7db7627f39 SHA-256: 9717e91ec9110eadbd0d2f37d788134ac142f55e88117019b46216a7cf41e31f
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://ttraff.link/pify?keyword=the+crucible+act+2+answers In PDF document text
    • http://files.ribbonsbiz.com/uploads/1/3/1/4/131453086/dixejob.pdfIn PDF document text
    • http://files.larryssportsexchange.com/uploads/1/3/0/8/130874128/folerezome.pdfIn PDF document text
    • http://files.thecrippler.org/uploads/1/3/1/1/131163667/fuwomedaludu.pdfIn PDF document text
    • http://gawefajut.harvestseedacupuncture.com/uploads/1/3/1/3/131380600/vonukukapoxupox.pdfIn PDF document text
    • https://site-1036946.mozfiles.com/files/1036946/24809072095.pdfIn PDF document text
    • https://site-1037905.mozfiles.com/files/1037905/xifonu.pdfIn PDF document text
    • https://site-1040164.mozfiles.com/files/1040164/89791545518.pdfIn PDF document text
    • https://site-1037192.mozfiles.com/files/1037192/43492181023.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9407/2214/files/29164100917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9232/9119/files/carrion_crawler_poison_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/2580/5724/files/35044592558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5601/2191/files/adjectives_starting_with_d_with_meaning.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_off000091f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F0 5200 bytes
SHA-256: f2ee14ed542146eced8a4b3abd0db39871bd0d8a8f97a407be20ed967862afdd
font_01_sfnt_off0000a3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3AB 9932 bytes
SHA-256: ea03a785cccdeae2704f5d80a14619b448f146ee49da08f8324aeeaefaf0571a