Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b699b48df50ecc…

MALICIOUS

PDF

48.3 KB Created: 2020-10-26 13:45:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 4f043f4fcafd942d7d3f767d1565d42d SHA-1: 1c6d88e39b6c93a16365e137275b93eeec89b830 SHA-256: 65b699b48df50eccd2ce4e306771b603fbdd9e5be407dfed87b271808826a8f2
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://cctraff.ru/pify?keyword=youtube+video+player+download+apk In PDF document text
    • https://korebamo.weebly.com/uploads/1/3/0/7/130739662/5475709.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/5650151.pdfIn PDF document text
    • https://zewuxufasebi.weebly.com/uploads/1/3/4/3/134320084/2bee142e8a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f8866fd63605.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f875bd5bbdce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_5f88b42ad053f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5f89184ac3d23.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1109957.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/695bbf852abce.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/wovexofek.pdfIn PDF document text
    • https://xuduburuk.weebly.com/uploads/1/3/4/3/134323667/5965981.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00005dff.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00005dff.bin)
    • https://s3.amazonaws.com/leguvefu/agricultural_engineering_board_exam_reviewer_with_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e3f28ef-0ded-42fa-8eb3-7e505e91553b/72360856482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/933e3e54-b2fa-4c28-b6b7-4dd602771fc5/mipam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f48ff2bd-b5f6-4aed-8a17-09575f0a56af/romeo_and_juliet_balcony_scene_activ.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/movanukazirodonew.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/3013052488.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/79852655761.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/ritmoneuran_bula.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 extracted file (font_01_sfnt_off00005dff.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_04_sfnt_off00009dc8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_04_sfnt_off00009dc8.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53BC 2900 bytes
SHA-256: 68d094faf81d2ea9f62e68ee4e789e40b6192f27e323b9e50c58fbaa8f881837
font_01_sfnt_off00005dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFF 5196 bytes
SHA-256: bb6d676cd2ea1d823be88c65cb82cb35727793009ff49da910f266891c1b52a6
font_02_sfnt_off00006fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCA 1964 bytes
SHA-256: f06c6e914f97ace2d21870ffdb8560e87b595c6aa39cec9b77639ff78903de20
font_03_sfnt_off00007923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7923 10728 bytes
SHA-256: 871b2db45f35c6568775c6c7578fd01a77dbe0188732e9fb625a3f6deeb01dad
font_04_sfnt_off00009dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC8 16100 bytes
SHA-256: 53f17eac413c2aad1ae19cad0136c816a94ae42e37a4d2c2131aaefc760970d7

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