Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a2a0dc60736286…

MALICIOUS

PDF

70.9 KB Created: 2021-03-03 03:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e1d925e1b8d5a39ce49511aace9d4a70 SHA-1: 492339dfa2fd7895397ad1e8d2757b4dcfd82118 SHA-256: a1a2a0dc60736286194540872595b0399c701b984af8d70397333763823e7b90
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/aws?utm_term=intercessory+prayer+requests PDF link annotation
    • http://pugisapi.mypressonline.com/xupozurimumeba.pdfIn PDF document text
    • http://tk-pobeda.site/87599765492p40sb.pdfIn PDF document text
    • https://cdn.sqhk.co/tajavujexiz/vgiTyhf/holy_city_brewing_farmers_market.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/jjg9fgh/apple_software_update_iphone_5s.pdfIn PDF document text
    • https://tefegori.weebly.com/uploads/1/3/1/6/131637168/6647257.pdfIn PDF document text
    • https://noxajigaja.weebly.com/uploads/1/3/4/6/134698193/walanazugela.pdfIn PDF document text
    • https://cdn.sqhk.co/lagidexetin/jGkjcgf/descargar_does_not_commute_premium_apk.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/labigalerijaz4md0a.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/62563107436.pdfIn PDF document text
    • https://cdn.sqhk.co/fowujizul/hhvMlAf/variable_color_temperature_led_bulb.pdfIn PDF document text
    • http://ch-redirect.icu/90089137676zw279.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_601935cce6100.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/bugaboo_frog_oder_cameleon.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/68210628076.pdfIn PDF document text
    • http://fikelamizogu.myartsonline.com/55549576267.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_off0000d8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D7 5060 bytes
SHA-256: 886328528ca6a55bdd49c52d9801d1f2ab98f38c3621f5df17d6e8449243b8f1
font_01_sfnt_off0000ea2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2B 10696 bytes
SHA-256: 230fdc7212b2fe8d454b2bb0caabffd965278bbe28bc0aa849fc6a1146b2f418