Malicious PDF — malware analysis report

Static analysis result for SHA-256 6174f31cf9f4f99f…

MALICIOUS

PDF

68.6 KB Created: 2021-02-21 19:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2846a8dd4dbede16289e0e1eaa7ee52e SHA-1: 7be52ea0c7f64e026f878a69a4c7afde87caf836 SHA-256: 6174f31cf9f4f99fc7fecffa3e4b44666d9260b60da7d128aa199ecfb4f516e1
166 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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/wix?keyword=222+prosperity+affirmations+pdf+download PDF link annotation
    • http://securityofusersdevicesonline.site/landing_page_wordpresstd92o.pdfIn PDF document text
    • http://outputqwvk.space/how_to_replace_battery_in_liftmaster_keypadtmlrh.pdfIn PDF document text
    • http://argo-tourism.com/45327539136bexiz.pdfIn PDF document text
    • https://repawuwo.weebly.com/uploads/1/3/5/3/135313919/fawenolorupodud.pdfIn PDF document text
    • http://fit-italy.space/how_to_draw_with_pen_tool_in_photoshopbu8hh.pdfIn PDF document text
    • https://zotorakiv.weebly.com/uploads/1/3/0/7/130739478/5674217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419205/normal_5ffcbf0c94649.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460066/normal_5fc9dfa78c8cf.pdfIn PDF document text
    • https://geridaradekod.weebly.com/uploads/1/3/1/4/131437552/gexaduvi-sabigukavoj-gotagonuvameje-wugizot.pdfIn PDF document text
    • http://tubixiwuwura.iblogger.org/4426549627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409421/normal_60323135d202b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxadib.epizy.com/jepuvuzenajeto.pdfIn PDF document text
    • http://sazevaxorofezag.epizy.com/guidelines_for_comprehensive_sexuality_education_k_12.pdfIn PDF document text
    • http://fadifisevak.epizy.com/38632626298.pdfIn PDF document text
    • http://xipokawopigigig.epizy.com/funuvozuvazasawuvitu.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_off0000d0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D3 5420 bytes
SHA-256: 63c09bcc3f33da6a28fc7c4c417898db5c8d78b8a89a9ce0d3579d24651568af
font_01_sfnt_off0000e344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE344 10056 bytes
SHA-256: 4948344341dab4d27e2546e5216147efd15bb6da8396c11d79c216f1c5894d43