Malicious PDF — malware analysis report

Static analysis result for SHA-256 001f457e9eb65167…

MALICIOUS

PDF

78.4 KB Created: 2021-01-19 02:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: d9e48577d889acce96d2a5d9d7fce57b SHA-1: 9a2d48a356b5142aef599d6384cb41ae93b7db1a SHA-256: 001f457e9eb65167ec10dda68faf0a418f008f288111203de0cf5ac10a3bc8c7
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/shook?utm_term=principles+of+management+lecture+notes+for+mba+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4498345/normal_5ffcd6a0709fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449998/normal_5feb05135d37e.pdfIn PDF document text
    • http://gupozatu.22web.org/baotian_125_manual_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408184/normal_5fef0b50a0486.pdfIn PDF document text
    • https://lefasibemaji.weebly.com/uploads/1/3/4/5/134589759/fegabopapulerarob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444643/normal_5fa187f979945.pdfIn PDF document text
    • http://wusejopajaxus.22web.org/paralegal_cover_letter_template_uk.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/kotilabivaf_bolusowopunidas_zukozapumi_gefuw.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/xowunilitefojeg-gigusiza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475985/normal_5fbb780ecb466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_5f8a2296485bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480899/normal_5fe43f5b6c409.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/xozeb/december_calendar_template_2018_word.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/tisoju.pdfIn PDF document text
    • http://magetamuwunaze.rf.gd/boy_story_too_busy.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/jabumuzajubojigibaka.pdfIn PDF document text
    • http://rovututuxopi.epizy.com/60500866242.pdfIn PDF document text
    • http://lajirobodogew.epizy.com/tactical_voting_guide_for_remainers.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_off0000f405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF405 5616 bytes
SHA-256: 585172a4fd110333ba917268c678e73fc99dcb9c1d20cb65e7a9918ddd143211
font_01_sfnt_off000106fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FE 11016 bytes
SHA-256: 61257f04af55a34bb12b4016aa2f8b685d94f71d99186cc935a2d810afc23cf2