Malicious PDF — malware analysis report

Static analysis result for SHA-256 424fa19fb6db0d70…

MALICIOUS

PDF

75.4 KB Created: 2021-02-23 04:41:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f121ec34acf005eda21ce58b4f23f9d4 SHA-1: 5544e0b414f7c8807e16d235ca36480c1794f468 SHA-256: 424fa19fb6db0d70d4bc4b59a788f6d4a19f177ec9fac106f6984d8b02b67cd2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/wb?keyword=sharp%20portable%20air%20conditioner%20parts%20hose PDF link annotation
    • http://creditactive.info/747948997590q443.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490725/normal_6029cadfea405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470220/normal_600db8a6f0087.pdfIn PDF document text
    • http://helpcreditscore.info/zawiwusidc1oxm.pdfIn PDF document text
    • http://ketousa.site/vekirilutepev8bskg.pdfIn PDF document text
    • http://leafester.online/mavorilofuxojibojunilunm61sl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460063/normal_601d3d71f23e9.pdfIn PDF document text
    • http://zetozofawa.22web.org/42304606154.pdfIn PDF document text
    • http://jobs-ingenieur.best/kebakubixoowzwd.pdfIn PDF document text
    • https://cdn.sqhk.co/xudekutof/i2Ugdhp/27476704984.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/XhgghFO/android_fm_radio_tuner_apk.pdfIn PDF document text
    • http://googsnat.space/6585997384qeccc.pdfIn PDF document text
    • https://cdn.sqhk.co/xugumewaz/YmuoihV/68756511401.pdfIn PDF document text
    • https://cdn.sqhk.co/dorusafe/hjigEyy/78783048133.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/geNfKhj/zojafasamoguset.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423166/normal_600d97ec9fe27.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xinudigiwuwa.epizy.com/29393392848.pdfIn PDF document text
    • http://magakawigola.epizy.com/rudamu.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_off0000e820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE820 5404 bytes
SHA-256: 9cc350614ac657d1769b242412b7fa8fd9b2147ca006a3fb99aa2455e125f154
font_01_sfnt_off0000fa67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA67 11160 bytes
SHA-256: fcdc6f856fa1732a44e30b5ab61dcb1031196fecd7375509f1f28e2c32c0dbc8