Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b9bf178cbdc66c9…

MALICIOUS

PDF

43.9 KB Created: 2020-11-06 19:12:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: cc16cc7e51626b64fc63995d295f5f8f SHA-1: 650de06807d842d3605e9d20773d8453c2b87850 SHA-256: 8b9bf178cbdc66c9ea6498178b89794fa3b01b1dd237cf245cc799a5df9d2b93
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffe.ru/aws?keyword=orange+roulette+unblocked PDF link annotation
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/2500895.pdfIn PDF document text
    • https://liloxowilobo.weebly.com/uploads/1/3/4/2/134265539/kuzafo_xobafimenazanun.pdfIn PDF document text
    • https://favasebuwakule.weebly.com/uploads/1/3/4/3/134328846/tejonojelif_mafapovefaxiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mizeteb/haddon_township_soccer_camp.pdfIn PDF document text
    • https://s3.amazonaws.com/rakonezum/jcpenney_kiosk_extapp_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd08133b-225a-4adb-90ca-78ca5ef2636b/vamomarazemuberudufinivud.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/pathophysiology_of_acute_diarrhea.pdfIn PDF document text
    • https://futaxesu.files.wordpress.com/2020/11/65133833438.pdfIn PDF document text
    • https://jopafez.files.wordpress.com/2020/11/vubemiruzovesamono.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6068 4996 bytes
SHA-256: 8f2dd1a175d7ce81dd9436ccbd8d35c3b4009a944e55154c36b958b832c9907c
font_01_sfnt_off0000716c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716C 10504 bytes
SHA-256: f95c339d59f34bcb4f816bb63fdc20b183b19d79c5dbb027919815334b16ae56
font_02_sfnt_off00009583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9583 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2