Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c706d1173880c28…

MALICIOUS

PDF

64.8 KB Created: 2021-02-21 18:18:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0da386dfb033ea234d4ea28b99698aa0 SHA-1: 0ceab8809822435cbe0c4d59ae640d87126c7023 SHA-256: 3c706d1173880c28ad815803a68ccd7580a377b4bb586dbf9eaa80fa55045ab5
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/aws?utm_term=directv+hr44+receiver+manual In PDF document text
    • http://salet.store/ibtimes_nfl_week_12_picks_against_the_spread1yikx.pdfIn PDF document text
    • http://siankaanmexico.com/viwifirubutevuguttd4vc.pdfIn PDF document text
    • http://mosdendy.store/lemetadevolidosimivageloz6qg7v.pdfIn PDF document text
    • http://ccckkkkk.space/best_marketing_strategy_examples4vyq8.pdfIn PDF document text
    • http://fitit.space/ethnography_as_a_form_of_researcha2dfj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5ffc398000c51.pdfIn PDF document text
    • http://salonly.xyz/18742450575usdxx.pdfIn PDF document text
    • http://clubstore.pro/64560276617lgjbw.pdfIn PDF document text
    • http://dsv-trening.ru/ezgo_golf_cart_parts_listmlju7.pdfIn PDF document text
    • http://vsedlyatebya.xyz/gifiwisogidazetosubadyma0z.pdfIn PDF document text
    • http://tradebot.space/piwopurapewas3hrdq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://solukirakologi.epizy.com/33233610239.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/68258262459.pdfIn PDF document text
    • http://gokojap.epizy.com/genovaxoje.pdfIn PDF document text
    • http://magivaxinel.rf.gd/82576003389.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_off0000c20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC20D 5008 bytes
SHA-256: 53b9bfd41b6b4fdf1684a5af8589bccee2483b1991aa84b1edb94578f9c91db0
font_01_sfnt_off0000d2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FA 10580 bytes
SHA-256: cd0a52beaa1928d210a3d02ee983c16ee212ef4197c1b926c5605debd5b9a9df