Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e5cd3cb25c2723…

MALICIOUS

PDF

45.7 KB Created: 2020-10-11 02:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 161dab32e552461697929a4df0b8723d SHA-1: 8c8d2448819425c191dbd2362ac3bec9763106ff SHA-256: 68e5cd3cb25c27236d19c0800a5f0ced56da73ca45f3b655ee350fcbfadd715c
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/pify?keyword=cricket+streams+reddit In PDF document text
    • https://site-1039489.mozfiles.com/files/1039489/30074856968.pdfIn PDF document text
    • https://site-1039002.mozfiles.com/files/1039002/39941186934.pdfIn PDF document text
    • https://site-1037177.mozfiles.com/files/1037177/36416883561.pdfIn PDF document text
    • https://site-1038573.mozfiles.com/files/1038573/dudilamalakadulomuzad.pdfIn PDF document text
    • https://site-1043169.mozfiles.com/files/1043169/bigegarabu.pdfIn PDF document text
    • http://files.whelkboy.co.uk/uploads/1/3/0/9/130969695/5657859.pdfIn PDF document text
    • http://towedor.mygingko.com/uploads/1/3/1/6/131637352/90835d0a134b.pdfIn PDF document text
    • http://fotof.lorettolink.org/uploads/1/3/2/8/132814930/56920fe3a.pdfIn PDF document text
    • http://files.littlegrandadventures.com/uploads/1/3/1/3/131381464/wifede.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/c1156cf4-cba9-4d15-8652-316ec1bf184e/50985737756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2588e0b1-e77c-4e62-9137-93a384881056/pezemoroxufobubilek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba30cc7-7f85-4642-86e6-246d6663224f/fefopofodojedas.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_off0000751e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751E 5024 bytes
SHA-256: 18b73cb59e845c2cf25f1189fe9499169b81f497519d62f143f05270aaae8f01
font_01_sfnt_off0000860c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860C 10712 bytes
SHA-256: e3bbc7d9f385ae041c4fb3fc43efee3d467767d7d1cfbf5496ef414bea182a6b