Malicious PDF — malware analysis report

Static analysis result for SHA-256 091ac95f163821ec…

MALICIOUS

PDF

68.8 KB Created: 2021-02-14 13:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 22eb82bdf22e975a667ad25230f4c2b2 SHA-1: 46f2ca070efb048afba537791d9b4d5808fed576 SHA-256: 091ac95f163821ecf4886dd9a5ba1588e1ab9abe1873e8a8fa27e1e69642ca7c
186 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
  • 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.
  • 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://leonvi.ru/wix?keyword=tna+wild+ginseng PDF link annotation
    • https://cdn.sqhk.co/xakelafu/I1cJQge/lezilemiramuvozi.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/cZhe0qu/5689010509.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/gH6fici/tonalenergy_tuner_and_metronome_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500877/normal_600a57ee6d986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500674/normal_601426b6ce9e5.pdfIn PDF document text
    • http://lawigimik.iblogger.org/xasubezujigobuwigolis.pdfIn PDF document text
    • https://cdn.sqhk.co/kusasuzona/jdQ1kfQ/99087029770.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwutu/eDD4iex/vamupugapewofoverexaje.pdfIn PDF document text
    • https://galofufe.weebly.com/uploads/1/3/1/3/131384583/tutenuleru-bufapikosutix.pdfIn PDF document text
    • https://wididalinur.weebly.com/uploads/1/3/3/9/133986726/8279412.pdfIn PDF document text
    • https://rimozaruminipa.weebly.com/uploads/1/3/5/3/135391391/1aea9218c38.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lemuguta.rf.gd/25888756409.pdfIn PDF document text
    • http://jilevatawew.epizy.com/couch_potato_app_android.pdfIn PDF document text
    • http://wuvasof.epizy.com/printable_korean_alphabet_worksheet.pdfIn PDF document text
    • http://bekapoza.epizy.com/xekuzuxunizawuxej.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_off0000d116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD116 4940 bytes
SHA-256: 094f4bb304d2bba0be79c6fda54dad4098654cbf3af693c3d758db1ab00b8727
font_01_sfnt_off0000e207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE207 10572 bytes
SHA-256: 440ec3c8e424cee0b31d3553c4c448da8cc4cf1168e0727a9d1abea66d6c07e7