Malicious PDF — malware analysis report

Static analysis result for SHA-256 e300ecee3ccd47db…

MALICIOUS

PDF

78.4 KB Created: 2021-02-25 17:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e92a4e03918db3e0f8bb40668a476fd5 SHA-1: d275c5f4547f37167f6d57025e6638a16a3e577a SHA-256: e300ecee3ccd47db72a7f15090953e633dd853365c5c7ebfee4371798d551b3d
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/wix?keyword=7.1+the+mole+a+measurement+of+matter+answer+key In PDF document text
    • http://finansi-7.online/molasadamekelusoje0vfm4.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/3iaGHge/3044121219.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/langstroth_beehive_plans_metriczo94i.pdfIn PDF document text
    • http://yogist.fun/agile_software_development_frees7xu8.pdfIn PDF document text
    • http://tohld.in/4212440305087ryy.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/jhcUjjY/fesulovuzuvogotoxigu.pdfIn PDF document text
    • http://best-ital.fun/english_grammar_practice_worksheets_for_class_60t84h.pdfIn PDF document text
    • http://pedalini.club/movies_2017_telugu_hdqz8od.pdfIn PDF document text
    • http://artrosil.xyz/404620657976uhe5.pdfIn PDF document text
    • http://tikovg.xyz/minn_kota_riptide_terrova_80_trolling_motor_w_i-pilot__bluetooth_-_24v-80lb-60_inchenxih.pdfIn PDF document text
    • http://triple-doska5.club/503688050756edp.pdfIn PDF document text
    • http://grenkasalo4.xyz/how_to_get_dsc_pinee1gq.pdfIn PDF document text
    • http://sodaapp.pro/nimokobunoqa73c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wenares.myartsonline.com/engineering_software_as_a_service_an_agile_approach.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/htc_u11_life_android_9_update.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_off0000ed44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED44 5336 bytes
SHA-256: 390e62121956ac85fdf99aae3a0a310b76df62a27053f20a52dbccc7c04cd159
font_01_sfnt_off0000ff62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF62 14440 bytes
SHA-256: 78c61c3416703595c744d7614116f501041e51d0b33639d27f4400416e945cb5