Malicious PDF — malware analysis report

Static analysis result for SHA-256 c085be776d4636c3…

MALICIOUS

PDF

45.1 KB Created: 2020-10-28 18:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a7c4ccf5bcaf415d3929096a5b90e894 SHA-1: 19a28936fab5dda82214335b4e0151e06ec78e74 SHA-256: c085be776d4636c3c1835b70b51ae17e7683d790ee5e1b5eeea085da402846e7
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/aws?keyword=gunther+gebel+williams+grave In PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/6b5a9bdabdbf.pdfIn PDF document text
    • https://sakuvajavabese.weebly.com/uploads/1/3/1/3/131383602/1486307.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/2416611.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/vabegili_bazokadotukad_lefedozuk_witomamewilun.pdfIn PDF document text
    • https://gemamiji.weebly.com/uploads/1/3/4/3/134372226/vefirejaruwevuzofe.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006010.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006010.bin)
    • http://www.opentle.orgIn extracted file (font_01_sfnt_off00007265.bin)
    • https://uploads.strikinglycdn.com/files/43740f87-2455-41e8-8be0-b75d390c8c6a/saanich_parks_and_recreation_active_living_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f594bca-17e6-4559-9e4a-350ba86d7277/62663149433.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e901419e-258e-4a96-8de6-f5012a48a046/flower_of_life_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4158/6332/files/pandora_job_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5aba25-2b46-4768-8f16-734712debe80/mx518_logitech_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/clothes_xray_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/declaration_on_the_conduct_of_parties_in_the_south_china_sea.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/544a5f54-4f82-4edb-acec-5388f3b72654/25536829081.pdfIn PDF document text
    • https://s3.amazonaws.com/damevusom/aisha_winx_boyfriend.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8448/files/49936873145.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/21295631334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53f7b69e-4e55-4408-99ab-d6cf73c98d62/xotexigudodibog.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/lipibidegolefimilakolisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e2ed30a-15ca-4f1e-8cb4-fef0c51a0157/73425545991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cd9bb97-de24-4277-b830-6ba896afd098/60425645498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7373c785-534a-49b5-b5a1-a8aba81cf7f7/gtx_780_vs_gtx_970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/anti_obesity_drugs_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc1f27cd-cd82-4d39-b574-bef51607c1ec/44704565299.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/31741671068.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_off00006010.bin)
    • http://www.gnu.org/licenses/gpl.htmlIn extracted file (font_01_sfnt_off00007265.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6010 5424 bytes
SHA-256: c1741f8c8eead1d730c01476857f459d18f759a87bcb7c4f49330a005dd784e8
font_01_sfnt_off00007265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7265 6068 bytes
SHA-256: 58b4873d33ac9fffaf45ed1a2312b8eb5fadf3b067e77f8cfe9e87095f6a7717
font_02_sfnt_off00008216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8216 10888 bytes
SHA-256: 40a2157a663d519d07eb8e93deda5dd6b2649023090144674afa67bcbfcb968f