Malicious PDF — malware analysis report

Static analysis result for SHA-256 142f4708d2cdb16f…

MALICIOUS

PDF

74.0 KB Created: 2021-02-23 03:43:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 70a009ae0a6daf07c5c21422a7815660 SHA-1: 891408a2da78ade9b322dc7441c3cb611c1b18de SHA-256: 142f4708d2cdb16f1754619ea3f6fe56554c5ddd9d07b47308bdfea80069f615
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/wb?keyword=how%20to%20replace%20an%20orbit%20sprinkler%20valve PDF link annotation
    • http://girizug.22web.org/inference_worksheets_for_third_grade.pdfIn PDF document text
    • http://waniwidolo.66ghz.com/what_is_the_last_sears_catalog_worth.pdfIn PDF document text
    • https://fakavenudir.weebly.com/uploads/1/3/4/0/134042443/074c17c83.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/kiddKgd/animal_sounds_game.pdfIn PDF document text
    • https://nuzupodulekego.weebly.com/uploads/1/3/4/6/134615520/422870.pdfIn PDF document text
    • http://com-signto2.xyz/ichigos_true_bankaiihvm8.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/djjk5Z2/shadow_battle_2._2_hack_download.pdfIn PDF document text
    • https://sevozinevuzejok.weebly.com/uploads/1/3/4/9/134903388/poxofak_danatipawopin_vukasixa.pdfIn PDF document text
    • http://honey-love.ru/94811815830nyw34.pdfIn PDF document text
    • https://cdn.sqhk.co/safajoju/bINghbL/unlimited_high_speed_internet_satellite.pdfIn PDF document text
    • http://verenica.net/how_to_start_an_argumentative_essay_conclusionsxjlz.pdfIn PDF document text
    • https://cdn.sqhk.co/gabamulijawe/hfgkjcy/potstickers_in_chinese_writing.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://finesegugumemo.epizy.com/somogeliwas.pdfIn PDF document text
    • http://xumerapugegivo.epizy.com/columbus_telugu_movie_songs.pdfIn PDF document text
    • http://tixerewolulas.rf.gd/75061593939.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_off0000e678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE678 5244 bytes
SHA-256: f4447164774177ebe9fd1a29fb85c03f9dc27db62e3279f2e058440aae031283
font_01_sfnt_off0000f868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF868 10124 bytes
SHA-256: 51ec5aed047adcbc9c481584c16dcc712c3824f529f605f15e93943aa743e2df