Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad6108333c703e3…

MALICIOUS

PDF

50.3 KB Created: 2020-10-25 19:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7609d3a32a54065ef3d2009dcf077c35 SHA-1: 351ddd979ca6d90d7847e176370528a8df7d51a5 SHA-256: 6ad6108333c703e3cf99a6ea270835b991bbfa316f22e511ec97f15332da2eec
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://ttraff.link/pify?keyword=gta+san+andreas+apk+1.08+mod+mega In PDF document text
    • https://nurirekesuvakip.weebly.com/uploads/1/3/4/4/134404885/5076632.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/2691997.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/fakovitexagazen-nuxaliladovobos-zuxasuru-zileniwijebunab.pdfIn PDF document text
    • https://zosibikatojufo.weebly.com/uploads/1/3/4/3/134382834/fumiwivifige_xasebaka_jagaw.pdfIn PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/mupobil-buxonuroli-towoxuzawunaxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5f8f61c473c4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5f87c68eb9094.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f900934486b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388412/normal_5f8dfe75235cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f88da15ee702.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369908/normal_5f8e61fc54d67.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e94.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e94.bin)
    • https://uploads.strikinglycdn.com/files/0327bc30-af5b-42ca-81a3-3b532066e737/49798909767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/079b5972-fd9c-4520-b9da-1dcc13feea42/quality_of_work_performance_review_p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a7a10fe-8416-4a6b-847b-60ef5c6cb350/gafoxetotosod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95d9d85d-ce20-4f93-ac5f-520f52e7950b/lojogagujoxuxisumix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7769cf32-7685-4d46-94bc-aaddd82f7f95/jawud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/38972360589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9116/5333/files/lego_harry_potter_knight_bus_4755_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5835/6120/files/us_navy_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9241/9757/files/mazexukivenam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0eb9e00-a602-47c5-b35d-c6c458fd764b/woxakutuzotig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b92c4909-16b3-453a-9b3a-9952f54f00bb/vusalezewagajovuparodati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d93f294f-6ffa-4bbb-85bc-abbb68e393a1/yeti_blue_driver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ee4876-da58-4b81-a1fc-ab9353a2777b/wofafefazoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25285696-f7af-481b-b2ea-ade503dec61f/rezalogaxiforukesug.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_00_sfnt_off00006e94.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000a519.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000a519.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E94 5764 bytes
SHA-256: ea00b11957df70e672e8ac8d68547e60b68dc9d38009ba0f531bc76d9347c13b
font_01_sfnt_off00008228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8228 10108 bytes
SHA-256: 853564c6ee5982112c884b01577f3ca3265c6606e7a287624126d90ea463c3b6
font_02_sfnt_off0000a519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA519 16660 bytes
SHA-256: 682a406efcdf7dd49f9c494c129bca6394f160b3e372cc4ba493723cd6bcd7e0