Malicious PDF — malware analysis report

Static analysis result for SHA-256 577e3fe5fcfd7c15…

MALICIOUS

PDF

64.6 KB Created: 2021-03-03 19:57:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d7b109b94c47c71ca55db4aa8065d1d1 SHA-1: 23541aab0a2b34cb6e1abd0d2e2fabd3e1ad9be4 SHA-256: 577e3fe5fcfd7c155f70b013e8aac6a0359992c323c26b57237c5b7cdbb70e78
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://fokemale.ru/123?utm_term=alamo+colleges+spring+2020+calendar PDF link annotation
    • https://cdn.sqhk.co/pugepavofu/ijyhcii/waifu_or_laifu_online.pdfIn PDF document text
    • https://pubogovivewata.weebly.com/uploads/1/3/2/3/132302724/tukugimeluxajeda.pdfIn PDF document text
    • https://zugufirit.weebly.com/uploads/1/3/1/1/131163535/6838308.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422912/normal_600bcc8121457.pdfIn PDF document text
    • http://sis-paypal.com/91750866811xtbl6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416940/normal_601dcdce64509.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402294/normal_6032357043e18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420434/normal_5fda3a53e245a.pdfIn PDF document text
    • https://gebiralegesexi.weebly.com/uploads/1/3/0/8/130814020/kuxaful.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/SIifibA/louis_segond_bible_en_francais.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387035/normal_600691177e42c.pdfIn PDF document text
    • https://cdn.sqhk.co/rujojumex/cD7JH8i/happy_birthday_friend_funny.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/bidemewufa/29114289603.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/kilitarozemoreripovuvuja.pdfIn PDF document text
    • http://sajavisazoz.epizy.com/the_odd_couple_play_female_version_script.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_off0000c0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0BE 5656 bytes
SHA-256: f0e04433d81e656298882dd79800af2e706b1446c423a56c9f570f63dfa46894
font_01_sfnt_off0000d3e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E4 9804 bytes
SHA-256: 43592f21f40c56893a9263576bc6d51bc46bb0dfb886a3973e7c319767aa0f6c