Malicious PDF — malware analysis report

Static analysis result for SHA-256 16d10b43c41be116…

MALICIOUS

PDF

44.7 KB Created: 2020-10-16 10:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2f1337b14f622b073039d49704f61128 SHA-1: 138d2258b4043dbb25af99779e16350d6c08b80e SHA-256: 16d10b43c41be116c27bbd9f7c59c93118bd2ef92b7ca44fa0102af77fdacf98
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://ggtraff.ru/123?keyword=osrs+chaos+elemental+range+guide In PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/xulutebuga_baruwimo.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/0dccf6cc0ac261.pdfIn PDF document text
    • https://xozanazefozi.weebly.com/uploads/1/3/0/8/130874019/2648b9e00982.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xizaxamuxive.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/7116450.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/2651808.pdfIn PDF document text
    • https://netulomite.weebly.com/uploads/1/3/2/8/132814473/869207.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/vetetikosotuzafiwop.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/pebabaxopurode.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/6497588.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/6036a2b33d70b.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/e267bbb8-0ac8-4b76-88bf-7eab0db20900/66418777425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd6bcc07-3512-4a36-bb23-2fc66dd57d96/wexefumigalaxijaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfdc7061-c44d-4595-99a0-e84458f16a81/kulibubuvumabewalekik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77f900fe-a360-4825-8321-42aed972d141/68320243148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6701a3a-4a21-4cf5-b4dc-393b7f35ce4e/retemaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b0ae096-f7ba-4f54-a78d-c7232286ba87/bojowedefemuxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aba6119-9579-4801-b612-9d88836ae48f/vedonemoturorokarawapore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/475e45a8-0005-40e1-9951-7215f8defb60/72281787064.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f81a4787-3b8a-4010-91be-a37402abf06e/bekobojagun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0894/9909/files/genenelusotin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6027/2808/files/xewowaliwaboponomimagow.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_off00007117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7117 5380 bytes
SHA-256: 7d60029e943c9f9fd3e711644086e59d65f421f20d219235e25e0fd624bb5aba
font_01_sfnt_off00008337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8337 9820 bytes
SHA-256: 75225a86d6a923afd760bc70e471a3cca1dc4898f68664e8911992e2b4ccb8f9

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