Malicious PDF — malware analysis report

Static analysis result for SHA-256 7669a68a4b1a19ef…

MALICIOUS

PDF

47.7 KB Created: 2020-10-28 22:54:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c6823aa5520bbf0a1177f07fb27e3f39 SHA-1: 586e3f9c946c3296cce638d648d37397daaca722 SHA-256: 7669a68a4b1a19ef412f600a3abeaeea514635748542c8ee8280016446cdb63c
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/aws?keyword=rowe+ami+r91+jukebox+manual In PDF document text
    • https://nasijominazol.weebly.com/uploads/1/3/4/3/134366940/6188534.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368741/normal_5f8872f035fd6.pdfIn PDF document text
    • https://xemivigezeb.weebly.com/uploads/1/3/4/4/134481563/legozidetuxa.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/9377510.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/puwufibutorevegos.pdfIn PDF document text
    • https://somisesi.weebly.com/uploads/1/3/4/5/134523690/venuvawaxaliwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5f890a2fa3a18.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/dfed2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5f92f67a2a679.pdfIn PDF document text
    • https://kuguzozivef.weebly.com/uploads/1/3/0/7/130739994/9437281.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/xelikanotuzifaja.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000078dd.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000078dd.bin)
    • https://cdn.shopify.com/s/files/1/0505/4644/2405/files/cricut_easypress_2_settings_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1271/8233/files/midepaxujuzonuseduzorojov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6847/0936/files/teduzoxutigivane.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/3485492418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4409/7176/files/gudekenijijuneg.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/69101475880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5751/9005/files/7344749060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7208/5926/files/53910633490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9530/3366/files/past_participle_as_adjective_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7371/9458/files/www.sugardoodle.net_primary_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6858/2809/files/75130481425.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_00_sfnt_off000078dd.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DD 5308 bytes
SHA-256: 4888dd0f52b733f0154d82193bbc780d17c8c5e49739ca50e3a9e8299261e35b
font_01_sfnt_off00008af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF9 11180 bytes
SHA-256: 6b6bebe1155003ce8c26c217ead3b65d05d9985312f11b71d5f0ae206290e2dc