Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fcc91ebfa536c53…

MALICIOUS

PDF

40.9 KB Created: 2020-11-06 22:37:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: cba30c4dce9b514f78f4a8f12ad675c8 SHA-1: eaba2a185bba183180a8e19e4d39f7ed5c086452 SHA-256: 6fcc91ebfa536c53a4fe06ff2a020155b5494cd422b6da8b6426b71933c3fb07
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/aws?keyword=free+amplified+bible+app+for+windows+10 PDF link annotation
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/4378045.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/ea180ab19.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/3317022.pdfIn PDF document text
    • https://gulijigomun.weebly.com/uploads/1/3/4/3/134350957/2616506.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/lupopitimeluvizonog.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/fad9166b-6291-48e0-8c92-b3e86ba11b5e/46171590135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9c963a1-0044-427d-b483-c64648b08ed6/bodeted.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/the_crossover_by_kwame_alexander_free.pdfIn PDF document text
    • https://guwuwiro.files.wordpress.com/2020/11/26574757382.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/cosmopolitan_magazine_online.pdfIn PDF document text
    • https://fuxuvonif.files.wordpress.com/2020/11/zodaxikewejejegupinuro.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/circle_of_fifths_chart.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_off000060a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A5 5568 bytes
SHA-256: cd5cd1b77f3a188f4bea5bb5f3bb3d1319e7ee227c41d6b216f32e57a05f63a4
font_01_sfnt_off00007390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7390 10524 bytes
SHA-256: 9b3202a8a157d89b554d242e97eafe44f88eb24b49405ab42273ceaba7d9018f