Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19b28a06286e6c0…

MALICIOUS

PDF

68.0 KB Created: 2021-02-19 09:09:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0569669b9531d529f8177e2cb58df5f6 SHA-1: f65e49376027fe2643e9649e6a58fe4a72baf46d SHA-256: e19b28a06286e6c0ae006dbbd6c1de09a4bcc2768414c3f874f06c403b66a907
184 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
  • 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=priscilla+shirer+fervent+book+pdf In PDF document text
    • http://outputqwvk.space/ziwazepixojabididusydts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368955/normal_5fdcdd9515073.pdfIn PDF document text
    • http://hookup682.site/dj_sound_effects_app_for_android5up1k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386618/normal_60027e8f98bb6.pdfIn PDF document text
    • http://pubggaming.online/basic_english_lessons_for_beginners3nw0z.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/jdhbjhd/33820120790.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447646/normal_600b8e461c3c1.pdfIn PDF document text
    • https://cdn.sqhk.co/zarejesorufo/csjeCrF/58576748855.pdfIn PDF document text
    • https://cdn.sqhk.co/notokulojow/ij9giZn/817766584.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/jihhcjj/little_baby_bum_nursery_rhymes_video_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454286/normal_5fdad75e6ca29.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/jcjaBTO/rukonofe.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/gotenukevepunin/werekun.pdfIn PDF document text
    • http://modenizax.epizy.com/zotadefubekolal.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_off0000cd3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3A 5508 bytes
SHA-256: 54af08c69b02db0e00b2126a5295911648b45a0f39342316616ba4b1df3b4497
font_01_sfnt_off0000dff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF3 10372 bytes
SHA-256: 8ab0e6ce20ff9d891e490a445bca702908b87af254b45efee7b27bcbf75d5914