Malicious PDF — malware analysis report

Static analysis result for SHA-256 98b471f28ac22cf8…

MALICIOUS

PDF

77.1 KB Created: 2021-02-22 05:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9f38e293f0c1ad7c7655b405a8509701 SHA-1: 110cbd544f0c6dc5b04d22fcaef0f6534be5df3e SHA-256: 98b471f28ac22cf88220a35ac724383e0c873addaf43e749166d9aa7f627dd8a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • 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://maypoin.ru/aws?utm_term=dell+inspiron+6400+drivers+download PDF link annotation
    • https://cdn.sqhk.co/jasurisunav/alaKsDH/15365972343.pdfIn PDF document text
    • http://poroda.site/what_to_watch_on_netflix_now_funny_moviesfxjcf.pdfIn PDF document text
    • https://wumaviki.weebly.com/uploads/1/3/0/8/130874148/5757965.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/jihieig/moweboxuweraroxijijotaj.pdfIn PDF document text
    • https://cdn.sqhk.co/selodiro/phaOsgi/62545174290.pdfIn PDF document text
    • http://govnososal.xyz/71540622078p2crn.pdfIn PDF document text
    • https://zixavuxo.weebly.com/uploads/1/3/1/3/131398386/kumal-pulidobo-gogamapasunefu-balobevozil.pdfIn PDF document text
    • https://woxufojobufuv.weebly.com/uploads/1/3/0/7/130739326/3283399.pdfIn PDF document text
    • http://daddytestit.xyz/25253461313dcrto.pdfIn PDF document text
    • https://cdn.sqhk.co/kidatufo/1jaR2ic/puzzle_and_dragons_z_3ds_rom.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/jikJXjj/diablo_immortal_apk.pdfIn PDF document text
    • https://notefusiwedamap.weebly.com/uploads/1/3/4/8/134872173/temujefafonuwuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ravizovagusemav.epizy.com/pududegek.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/skewed_right_skewed_left_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/chambre_de_commerce_de_montreal_formation.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_off0000f0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EB 5488 bytes
SHA-256: 2ed0592b6dd2687fa575152ba7d36687cfea7d0e9e74e49de7598db82bfbef1f
font_01_sfnt_off000103c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C7 10424 bytes
SHA-256: 5517f34c2c38d8299708bb038b01d012c11cd01402e7cc294b8a7c8a695c9041