Malicious PDF — malware analysis report

Static analysis result for SHA-256 303050a4371340f1…

MALICIOUS

PDF

68.6 KB Created: 2021-02-28 06:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3c8cf0d9b6df9fc5ee7d5a57a7aae81c SHA-1: ce60572a6ea2b07480d0aec9aa10b9f6ecbedca6 SHA-256: 303050a4371340f1ac7ea7e928c62d46a7ca6d423d593b92ea34b8f2aa56ae1e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/aws?utm_term=dunkin+donuts+frozen+coffee+calories+medium PDF link annotation
    • https://cdn.sqhk.co/sebazisop/duibusX/knot_to_attach_rope_to_pole.pdfIn PDF document text
    • https://tunuzari.weebly.com/uploads/1/3/4/3/134316111/lojinuxafijerubegiv.pdfIn PDF document text
    • https://bebibamo.weebly.com/uploads/1/3/1/4/131438385/91bf98bc4.pdfIn PDF document text
    • https://cdn.sqhk.co/lotuxuduvoki/9hjmiiL/little_blue_robot_cartoon_network.pdfIn PDF document text
    • https://fukenotaza.weebly.com/uploads/1/3/2/7/132740373/bevoguxaj.pdfIn PDF document text
    • http://snapchat-alert.com/desaxonenilujidijom7j5x9.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/ijap1oG/red_robin_locations_in_pa.pdfIn PDF document text
    • http://qwertyujg.xyz/604105859557r615.pdfIn PDF document text
    • http://cucoupon.info/invicta_watches_for_sale_cheap8rj40.pdfIn PDF document text
    • http://gonisavuxur.iblogger.org/dabidodoxuvezobigibi.pdfIn PDF document text
    • https://mebuduwo.weebly.com/uploads/1/3/1/4/131453299/c5d103.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://weralawubuzeg.epizy.com/applied_mathematics_3_information_technology.pdfIn PDF document text
    • http://jirabasojexosud.atwebpages.com/why_does_my_upper_back_hurt_when_i_look_up.pdfIn PDF document text
    • http://felapoliriwid.rf.gd/gps_garmin_nuvi_2589_lm.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/gedapisotule.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_off0000cdd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD2 5280 bytes
SHA-256: fe9994afc94c83800ce39ba3a378c1840b0f404f4b78ee53de11fe5f5584367d
font_01_sfnt_off0000dfc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC8 11140 bytes
SHA-256: e04de590d8e561dbf307c013a3fd0ba7f1dec3292b5daabc39436d42ece8e2d2