Malicious PDF — malware analysis report

Static analysis result for SHA-256 d076626dec9733df…

MALICIOUS

PDF

72.0 KB Created: 2021-02-24 20:01:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66d63c1cd6b77795e81005735ee54129 SHA-1: 6d9a58c035b4f2730ca2256a5bd24ccf5164756b SHA-256: d076626dec9733df8c810678e4bc42be66408ded25faac42346233c1e2df4b12
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/aws?utm_term=social+psychology+examples+in+movies In PDF document text
    • http://thrivewebs.com/351925504750jlgo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450632/normal_602cf16833825.pdfIn PDF document text
    • http://wildboost.club/how_to_write_a_conclusion_for_literature_review0dqnz.pdfIn PDF document text
    • http://gnoogle.site/2004_dodge_ram_1500_headlight_bulb_ledx11af.pdfIn PDF document text
    • http://chambrely.xyz/paxotapavoluwojojakedhssed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_602b35d334d55.pdfIn PDF document text
    • http://pressit.space/uni-_t_ut61ex2akg.pdfIn PDF document text
    • http://postel-na-zakaz.ru/what_is_blood_spot_in_eyeb9h2c.pdfIn PDF document text
    • http://avlto.best/html_and_css_code_tester_free9l1ce.pdfIn PDF document text
    • http://mixit.info/738497444030o5ao.pdfIn PDF document text
    • http://dimax-matrasy.ru/mudixikivev5uesf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454822/normal_60135d332dd50.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/guba_and_lincoln_2005.pdfIn PDF document text
    • http://kernig.pro/map_skills_nwea_student_loginx78lp.pdfIn PDF document text
    • http://teksalle.xyz/baidu_spark_browser_for_pcz5e8y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC37 5584 bytes
SHA-256: d26994db8173eab8e88399e9ce8868497bbe41a20316fc10c37184b8018dbbe0
font_01_sfnt_off0000ef24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF24 10808 bytes
SHA-256: c968346554419870effa3b53428076106d9e3a31217b7a4a50b1998ad88a28f8