Malicious PDF — malware analysis report

Static analysis result for SHA-256 f86e4f38c01ef705…

MALICIOUS

PDF

81.4 KB Created: 2021-04-20 07:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 09d0658e1d27a7b591abd304792483fa SHA-1: 58a8dd44abbac644ba63343bdf9d31ca94a5a9d2 SHA-256: f86e4f38c01ef70523a5d5375df0366ec87e700df6c18aa2da2befe92c9094f2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ponafet.ru/strik?utm_term=how+to+publish+a+tamil+book+in+amazon PDF link annotation
    • https://cdn.sqhk.co/wiwevini/8M3hhKi/folunumiletefevet.pdfIn PDF document text
    • http://yourbigdick.space/sevuwoguvekusonupetakaxwmbso.pdfIn PDF document text
    • https://cdn.sqhk.co/mujutuzidip/hthhWjv/34322467920.pdfIn PDF document text
    • http://pipvip.ru/video_er_software_for_pc_windows_7xkj0o.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/grGgejd/zunoxunexubasirekon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428043/normal_606b9fc8b715e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485822/normal_6016150092f6b.pdfIn PDF document text
    • http://shortsomfj.space/vegapumewusolozuruxukumk5.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.net/jasarujupapatukonivab.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/95576402915.pdfIn PDF document text
    • http://teleporttur.ru/business_law_book_for_bba0z5ew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379034/normal_60103b8abdfc9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puzugewowe.epizy.com/50125815027.pdfIn PDF document text
    • http://zotebizitiwiwe.epizy.com/the_chimp_paradox_audiobook_free.pdfIn PDF document text
    • http://najevepa.epizy.com/4814599521.pdfIn PDF document text
    • http://bomotunitalelug.epizy.com/26738571608.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/the_boy_in_the_striped_pyjamas_book_quotes_with_page_numbers.pdfIn PDF document text
    • http://puwigedonokapav.epizy.com/figojivupaxoresivo.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/punoju.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/44175232728.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/what_is_meant_by_noting_of_bill_of_exchange.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE926 5272 bytes
SHA-256: 7c700a82acdf81185ce26bfc2acafb48b34c823d5b0a759bef916890e4a633ea
font_01_sfnt_off0000faf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF7 11120 bytes
SHA-256: 89cd7eee7f76813097af44bf8afc089bc5c265a7f57e2f5f1cd49f7a15075acc
font_02_sfnt_off000120e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E7 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1

Open this report in the interactive analyzer, or submit your own file for analysis.