Malicious PDF — malware analysis report

Static analysis result for SHA-256 da53dda4fe5aca9d…

MALICIOUS

PDF

72.2 KB Created: 2021-02-28 06:07:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 08be16a9f7ed069f9c0b60f01799ffc5 SHA-1: 58cecf9d8710a0a095167ff9f0a603baf2862677 SHA-256: da53dda4fe5aca9d94a851f15b5b5a87e52c89c48ef5af51a344eed0dce96bde
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=madison+wisconsin+movie+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4461205/normal_5fe6961d7ffd8.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/is_the_lexus_hybrid_worth_it.pdfIn PDF document text
    • http://kakafeg.scienceontheweb.net/vapup.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/11092793683.pdfIn PDF document text
    • http://my-credit.info/womens_nike_air_force_1_pixel_ghost_aquarjnxn.pdfIn PDF document text
    • http://help-copyrighteamservice.com/dm_vasudevan_biochemistry_9th_editions1cmv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_5fdb981008d89.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/topezuxazazulurojarize.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490121/normal_60302d00107c1.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/the_coldest_winter_ever_movie_release_date.pdfIn PDF document text
    • http://genoray.pro/amigaos_4._1_final_edition_update_1dv1mi.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/dAhhejb/93356288012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483608/normal_600cbe0c0d65f.pdfIn PDF document text
    • http://dfwshootersupply.com/bass_pro_shops_duck_shooting_target_gameoe754.pdfIn PDF document text
    • http://steh-sistem.ru/cyberghost_crack_for_pcqfgru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/palevijuj/the_way_we_eat_now_goodreads.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/cat_in_the_hat_babysitter_actress.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/calligraphy_letters_guide.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/86621337088.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB1 5092 bytes
SHA-256: bbb83e649e5a83fc65ffdf5266d794847d405eb6fdbdc517e956511b8b4b2637
font_01_sfnt_off0000dfff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFF 11296 bytes
SHA-256: d6795136187de12bed27642b12604dc7ce1731c71d21eade136ebc05bb9258e5
font_02_sfnt_off00010576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10576 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c