Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0709913cce5ec8a…

MALICIOUS

PDF

37.3 KB Created: 2020-11-07 13:52:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f32a94b8368b9a7eb491bad16bfef46f SHA-1: e419fe32f47b8ca7b3a6aadbb7b0ef900978b141 SHA-256: c0709913cce5ec8a85423f54cf9c387f40c5fed28b7a5abfa0b9c595795dd570
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://trafficel.ru/aws?keyword=mino+monsters+apk+download PDF link annotation
    • https://lituveso.weebly.com/uploads/1/3/4/3/134362288/bbbcad.pdfIn PDF document text
    • https://wubawujol.weebly.com/uploads/1/3/4/2/134266052/5054570.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/movewaluregoxifasi.pdfIn PDF document text
    • https://sozazisoxiz.weebly.com/uploads/1/3/4/4/134463449/badatewonon-zofipolafiz-wuvosawigoni.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/2386540.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a0bf3e-410a-4244-9e65-97ae804d323a/53287386589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01fac7a3-d091-45d9-9afc-a5261070b4fe/81526449317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fac79814-8765-4598-8521-0ad7332bf485/99380961766.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d17cbc9-5348-4eb2-8af5-1a1627e1b25d/sotilupakefune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfaeb3de-dddd-4132-938e-5add8d43efe2/vutufozikixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a245cad-bd6f-4cf5-b493-306740e67b83/16643926307.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/2876797167.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_off000051af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51AF 5264 bytes
SHA-256: 0a4bae9cedf08223b8d8dcbe24c2dd8b9fdeeaf16195bd0b367cf5107ea108c3
font_01_sfnt_off0000639a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 11272 bytes
SHA-256: 33324eff9c391bf2aba8f75d7e29f225e074d67056877f5d60c59e31d1cd3cfb