Malicious PDF — malware analysis report

Static analysis result for SHA-256 190cbfc8d0ac579d…

MALICIOUS

PDF

73.2 KB Created: 2021-02-24 14:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 295276e2231294d5669b52522dea3aca SHA-1: 693d40fecb23f97af9f95a34e163467ca8dcf636 SHA-256: 190cbfc8d0ac579df64e2975e0ebaff57e7f728b0a81c6e7f6d45b405b7faff9
186 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.
  • 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://bologen.ru/wix?keyword=story+of+samson+worksheet PDF link annotation
    • https://cdn.sqhk.co/rularijulen/aifghic/world_chef_hack_apk_mod_download.pdfIn PDF document text
    • https://cdn.sqhk.co/biwopeka/i9Cgejh/best_buy_open_box_laptops_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/lilodipu/10Qgfhe/marvel_comics_museum_nyc.pdfIn PDF document text
    • http://instup.xyz/conjunction_worksheets_for_year_7y4192.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/Djbgdgc/vupirunafavazigejijosefad.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/jgjd3hK/birds_of_prey_review_rotten_tomatoes.pdfIn PDF document text
    • https://panesiwosejel.weebly.com/uploads/1/3/0/7/130739396/vezamulunafot_tapudezenusig.pdfIn PDF document text
    • http://setlyb.online/ingenieria_del_software_ian_sommerville8fmfh.pdfIn PDF document text
    • http://leopards.space/73496725213c5uf.pdfIn PDF document text
    • https://gigazafopojub.weebly.com/uploads/1/3/4/0/134040382/javevuses_genate.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/d5haMge/54603049226.pdfIn PDF document text
    • http://smartbright.club/automated_manual_transmission_works7xnzu.pdfIn PDF document text
    • http://tosety.xyz/affiliate_marketing_guidejd1vp.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/dinigugaxej/11203176322.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/xuvogiru.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/questes_cnidrios.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_off0000e0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CF 5336 bytes
SHA-256: bb074957aaf700389f45e96fe715d6975aff142621407f5823b06b52e1f9840b
font_01_sfnt_off0000f2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E2 11088 bytes
SHA-256: 6fa588d640a8019f4301284a52bf6cc40d23c17c6d8a02f0a99eedeb8c7f8512