Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e4c69797585401…

MALICIOUS

PDF

46.3 KB Created: 2020-10-08 14:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8de85bb757deeca9a765d3cdf9b02010 SHA-1: f98716588f9b4c179cc5ad034b0a636cb3211872 SHA-256: 82e4c697975854012aacd1c98b50ead9c592142e21254838f283ab9b64d14845
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=maximum+power+xl+cost In PDF document text
    • http://xakosen.ms-wendys-class.com/uploads/1/3/2/8/132814500/suterisavafabepa.pdfIn PDF document text
    • http://files.claudiaosborn.com/uploads/1/3/1/6/131606640/5807805.pdfIn PDF document text
    • http://wodad.onesourcemobilehc.com/uploads/1/3/1/4/131452883/4682679.pdfIn PDF document text
    • http://zujoma.lovebustravels.com/uploads/1/3/1/4/131438563/lozuwaj_sevek_kazigoliji.pdfIn PDF document text
    • http://tusarufen.maldonarchive.com/uploads/1/3/1/3/131384169/renamuluji.pdfIn PDF document text
    • https://site-1042017.mozfiles.com/files/1042017/kakodu.pdfIn PDF document text
    • https://site-1042835.mozfiles.com/files/1042835/99477909071.pdfIn PDF document text
    • https://site-1037235.mozfiles.com/files/1037235/gobiz.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/1/0429/5675/1002/files/craigslist_oklahoma_city_cars_and_trucks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2116/8540/files/musical_time_periods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/binding_of_isaac_technology_seed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2641/8328/files/rca_universal_remote_rcr312w_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/6449/5773/files/nojebixadug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1241/1551/files/75457803584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0328/0027/files/central_route_processing_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2818/5239/files/22551645631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3132/6631/files/terran_guide_2019.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_off000074c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C4 5244 bytes
SHA-256: d40c6dca568eeecfcabd524d38d8bbc9e7819e08b1bd0c7226e64d9051f91b8b
font_01_sfnt_off000086a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A0 10944 bytes
SHA-256: 31eaeb031a22ece3c1faa3855bea0909e9332a6a70896aff01e491900cce1f66

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