Malicious PDF — malware analysis report

Static analysis result for SHA-256 84450336f433c3cc…

MALICIOUS

PDF

72.5 KB Created: 2021-01-14 10:16:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: d90de8344c04e3ff96144589971c9f07 SHA-1: 045ba65013186990c2b57531ed52397457409012 SHA-256: 84450336f433c3cc81c0fe69b50d9df240daf191b86558c1b5110c02a6356681
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffking.ru/mozel?keyword=facebook+messenger+android+app In PDF document text
    • https://cdn-cms.f-static.net/uploads/4463552/normal_5fe6d613e9d8a.pdfIn PDF document text
    • https://xelemurefitarag.weebly.com/uploads/1/3/4/6/134601467/63633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393785/normal_5f9895e9a93a2.pdfIn PDF document text
    • https://site-1183131.mozfiles.com/files/1183131/tik_tok_songs_youtube_2019.pdfIn PDF document text
    • https://site-1203466.mozfiles.com/files/1203466/slime_live_wallpaper_apk_xda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375358/normal_5fcaad3f27ce3.pdfIn PDF document text
    • https://wojewifonutej.weebly.com/uploads/1/3/4/8/134883442/b5964f8db0c9d6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480594/normal_5fd781bf432e0.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/zuxadol/viduxujabakubiniga.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/mimokokugexozig.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/android_developer_support_different_languages.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_off0000df4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4E 5520 bytes
SHA-256: 2b11b5e8887a978a95d1605eb7980f549ea24a8346513ac15ed51c2b111ca554
font_01_sfnt_off0000f1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F9 10208 bytes
SHA-256: bf4693d01bd99e99c051ed9f63a3b05ee95e787afa30c5e9f25855dd375ce465