Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2afd82fb667fd5…

MALICIOUS

PDF

41.0 KB Created: 2020-10-06 10:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: eede8e20f3e57509d76ac9eb751b280c SHA-1: 2f8d6e3512c764d0fb083e8a550c9547dc88b4a4 SHA-256: bf2afd82fb667fd5200b601ded848ae670e32c9f41ed720c37d1978a49acdcb3
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?keyword=how+to+download+nba+2k17+free+ios In PDF document text
    • http://files.parlorartgallery.com/uploads/1/3/1/4/131408516/pozafolewazomagotepe.pdfIn PDF document text
    • http://files.licmotorsports.com/uploads/1/3/2/7/132710780/jilivologumutun_sifodobavogubo.pdfIn PDF document text
    • http://files.sloanemorocco-efolio.com/uploads/1/3/1/4/131453274/0eef6d.pdfIn PDF document text
    • http://latog.caseycollegeofdermaltherapy.com/uploads/1/3/1/4/131482993/fumakut-kivileteke-kerovuduredesow-xupufawazafuz.pdfIn PDF document text
    • http://worenokop.youngworlddayschool.org/uploads/1/3/1/6/131637016/suvobawusonav.pdfIn PDF document text
    • http://bomudoko.noblecameron.com/uploads/1/3/0/8/130874050/jedibudumij.pdfIn PDF document text
    • http://files.lightningridgerealestate.com.au/uploads/1/3/2/8/132815961/tuwor.pdfIn PDF document text
    • http://nelinor.strivingtobebetterfitness.com/uploads/1/3/1/8/131856293/nuxomodatutani-kepojew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/laxolinitaxotegokab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7295/4269/files/nisuremevozimikan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e62e7ec-6976-4e3a-a341-c7aa1ac58290/vijikusulizozizabazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63dbe697-eac8-40fa-8fd3-c7000121001a/xekotosipixaraz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44275827-128f-4cc9-b86e-61b9b8b85b08/92743227246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5df19a7-5252-45f3-8737-177344ed9dcb/2135594381.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7E 5424 bytes
SHA-256: 296c4925ae82a8259ee98c3bc3a31478d263e5e69f3c139931f2f1c995473381
font_01_sfnt_off00007218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7218 10900 bytes
SHA-256: 4f9f2cb5e04bb6636dfe832e216668a31daeb86871f7d840a2c6081a6f11b26c

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