Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f349e6cbef3232d…

MALICIOUS

PDF

69.6 KB Created: 2021-02-15 09:20:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0b861a1675772d15af18bf1062e0a4ca SHA-1: 11dba5cd556e498e318c9d3dda3e5aec4595350c SHA-256: 9f349e6cbef3232d0831511e3a92289d08e916d418829d54599a52a4731a7c7e
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=tea+direct+sales+companies In PDF document text
    • http://50offshop.pro/simile_in_romeo_and_juliet_act_2w4uob.pdfIn PDF document text
    • http://ita-yog.space/tiwat0mfqn.pdfIn PDF document text
    • https://tusezewepoxir.weebly.com/uploads/1/3/4/3/134339989/5796370.pdfIn PDF document text
    • https://xesisawizes.weebly.com/uploads/1/3/1/6/131606125/gibitorevagijo.pdfIn PDF document text
    • https://teduraxiwerul.weebly.com/uploads/1/3/2/6/132681384/abc5f9e0ab.pdfIn PDF document text
    • https://kuxijixa.weebly.com/uploads/1/3/4/8/134856984/varadunutifuluxab.pdfIn PDF document text
    • http://peskomment.ru/64007355465ncbgc.pdfIn PDF document text
    • http://boomua.site/34831450108p92tx.pdfIn PDF document text
    • http://converstarget.ru/40804750919asxrj.pdfIn PDF document text
    • http://xsafak.com/homemade_burger_recipes_ukdgqtj.pdfIn PDF document text
    • http://capridigi.com/lightroom_preset_xmp_to_lrtemplateyvbkt.pdfIn PDF document text
    • https://vimasideb.weebly.com/uploads/1/3/3/9/133997972/872128.pdfIn PDF document text
    • http://lordtrans.ru/kaniliruvajex3dgq.pdfIn PDF document text
    • http://goshop32.site/partnership_deed_formatqbz8y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451970/normal_601187868d62d.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_off0000d2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F9 5168 bytes
SHA-256: 1d15df7fea0577861a08c3f5957bfc1748aa0c9ae88f3be5f243831f19d76547
font_01_sfnt_off0000e476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE476 10988 bytes
SHA-256: 009f0c2e062619de2712930c7711191cd8ba4af4905a61d608f617bc0b7a118e