Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde2f66dca3f0f9c…

MALICIOUS

PDF

61.5 KB Created: 2021-02-12 12:30:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3cb83d95cf454482d7ca024052ce086a SHA-1: ce05f732a249a41d8dd1ad4c3853b508d0f0d39a SHA-256: dde2f66dca3f0f9c569b979f89adff83d76c89146a5bbaa3264ec695e59fd234
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=top+unblocked+games PDF link annotation
    • http://sale50.pro/44242687208yv0eb.pdfIn PDF document text
    • https://popagupo.weebly.com/uploads/1/3/1/4/131407300/a6a75046.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422884/normal_5fe35b13955ee.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/lego_batman_2_dc_super_heroes_wikiqobso.pdfIn PDF document text
    • https://gogovujogizog.weebly.com/uploads/1/3/1/6/131607278/4c3b152a1498416.pdfIn PDF document text
    • http://parkji5x.xyz/zombie_horde_defense_easy_shooter_games_ps4qkuru.pdfIn PDF document text
    • https://dujakoxuk.weebly.com/uploads/1/3/1/4/131483447/xobopibasisedisuni.pdfIn PDF document text
    • http://braco.ru/corrugated_metal_sheets_for_sale_near_mejqe5f.pdfIn PDF document text
    • https://tezefidusipenu.weebly.com/uploads/1/3/1/8/131857758/65c8751e09ebc21.pdfIn PDF document text
    • http://terem.space/1941022478720yfv.pdfIn PDF document text
    • http://hh666o.site/annexure_a_self_declaration_marathipb008.pdfIn PDF document text
    • https://zifalopo.weebly.com/uploads/1/3/1/3/131379769/377018.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/fulosobezur/89344712927.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/xebiduzawigupavor.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/98493006082.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_off0000b569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB569 5452 bytes
SHA-256: 96aed988ad0ecea20b3eb0a8449e1ff1126316599ce630764f9df7cf103abdfc
font_01_sfnt_off0000c7dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DC 9824 bytes
SHA-256: b5d7d1295cee431a71b44339ebc5a5b70235d35908572b529e6584d49d71db33