Malicious PDF — malware analysis report

Static analysis result for SHA-256 38287389f5d7e54f…

MALICIOUS

PDF

73.1 KB Created: 2021-02-14 00:11:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 06850a98b9a2a5c23342f73200a893f4 SHA-1: fbee0c744e2f77dbe4abddd350afd7a8113ba84b SHA-256: 38287389f5d7e54f876b5980b061719ee09edd7c7091de8f43b7cb988aa34947
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/wix?keyword=breaking+a+lease+before+moving+in+texas PDF link annotation
    • https://cdn.sqhk.co/xakawituk/3WFijvL/lekidogefogemi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447085/normal_6025fcf0b7ed3.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/reditofevasek_turelupefezafa.pdfIn PDF document text
    • https://girosiwubu.weebly.com/uploads/1/3/0/7/130740458/takofuriwiwane.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379489/normal_5fcf198bda45a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426571/normal_5fce643e31d66.pdfIn PDF document text
    • https://cdn.sqhk.co/juzurupivepo/aUSjb49/super_saiyan_shadow_stick_battle_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/je2Wgi7/jenorosuruzupidopivusira.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/UjhddeU/counter_strike_2d_game_for_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391898/normal_5fc7ba4d1d936.pdfIn PDF document text
    • https://mijutadozas.weebly.com/uploads/1/3/4/5/134590660/rusewuzupef.pdfIn PDF document text
    • https://cdn.sqhk.co/maxanogefo/PBiXkhd/38834886768.pdfIn PDF document text
    • https://cdn.sqhk.co/gupikekarobo/ie9JkDB/46550831124.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5ff4e7bdbb12a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_6027d43f0217b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE230 5468 bytes
SHA-256: 2f5d70f61ac0f3e0439d633ee653ecb6a312cc74948b1e445797e4537cded783
font_01_sfnt_off0000f4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C9 10184 bytes
SHA-256: d38ad73b7e07f975f841d7655f9b16f4f66ab7a44ce0923dd301629594f1e132