Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de5040d75b4c467…

MALICIOUS

PDF

75.0 KB Created: 2021-02-21 10:44:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f42cd87f328a5eaa14478b43a76c8ac2 SHA-1: 1c9004a4563f64a6236f06ac11b99c5ab0283f2a SHA-256: 0de5040d75b4c467cf8722781c4474763dcc7b4906c631492890ccfae5d9624c
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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://yafferge.ru/wb?keyword=what%20is%20safety%20engineering In PDF document text
    • https://gojatoxemoniro.weebly.com/uploads/1/3/4/8/134894745/toguna.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380675/normal_6004fac1d4a5b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414173/normal_5ffa06e115b6c.pdfIn PDF document text
    • https://sezorataxij.weebly.com/uploads/1/3/4/6/134600708/4c6523428389dcf.pdfIn PDF document text
    • https://dimegowogox.weebly.com/uploads/1/3/3/9/133999821/8adca398e.pdfIn PDF document text
    • https://jojonawizofobu.weebly.com/uploads/1/3/1/4/131438175/238175.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/mamaxatebudet_mozopidefarid_ludigaja.pdfIn PDF document text
    • https://dutizadip.weebly.com/uploads/1/3/4/8/134889078/vinevekitel-ruzemogar-rogobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_601548c5da8f8.pdfIn PDF document text
    • https://cdn.sqhk.co/dojopaxitovi/PPqqbih/kleptocorns_safe_codes.pdfIn PDF document text
    • https://nabinavupofi.weebly.com/uploads/1/3/5/3/135350319/vijodujanugup_fafapin_folebera_rofawobitej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/pupemifapumonuleditaxibik.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/83732065784.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/futazenipafip.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/23090544642.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/33547745261.pdfIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/film_anunnaki_2005.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/80262687881.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_off0000e95d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95D 5112 bytes
SHA-256: b10cb302b07b3a57c95a6a6b4cc79cac36ae02baec99e520b353038998a6bfc4
font_01_sfnt_off0000fad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD7 10648 bytes
SHA-256: f219ad8ecb507d36de2ab0224d1a1dd7fe2e4bfe73f46e2b8e19ba396c28fc9f