Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc35b5e6f027816…

MALICIOUS

PDF

46.4 KB Created: 2020-11-06 13:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: f3c5eea010fb288f1918e237aba39d4a SHA-1: 7ede4986e137201ab01732c6a7a13d0738234abc SHA-256: 7cc35b5e6f027816e59e748bfa3b2195eaa037e01863d4c436238be67d7e6ad1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/123?keyword=club+penguin+mission+3+fuse PDF link annotation
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/pexuxulizifi.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/153262e27192c51.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/gametuzumax.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/4255209.pdfIn PDF document text
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/basugudorowani.pdfIn PDF document text
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/7172158.pdfIn PDF document text
    • https://roxexiku.weebly.com/uploads/1/3/4/4/134445291/2702184.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f896fc3d6cab.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://uploads.strikinglycdn.com/files/71eaf238-b3a9-4844-8749-51c36fbad7b6/ginunerupelawusejena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43de9800-7008-40de-a3e8-f28148bad518/gujubukubuzapisotuxiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903a3e02-d083-4ca8-8cab-8b39d999b564/ap_bio_chapter_48_reading_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/17301405360.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/fewafozidar.pdfIn PDF document text
    • https://s3.amazonaws.com/welutizenop/effects_of_the_war_of_1812_on_america.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109f5218-9091-43d1-a10f-00d12d223635/62131130115.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_off00006ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC7 5044 bytes
SHA-256: dc15429f910b515c01f5a4fdf436664e48ba4aeefad68a9c205380bd3255ecb1
font_01_sfnt_off00007bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDA 10176 bytes
SHA-256: 49ae992d0dc6bf79359356ff61a24472bbb162de2f7d98092506fe728b7c50f9
font_02_sfnt_off00009e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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