Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade675c3def63e47…

MALICIOUS

PDF

40.5 KB Created: 2020-10-03 16:35:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4415a6a8b9d538ae87fdd780d1498a06 SHA-1: 0e857b52a8446e0ea9de70cba8b4ad9b254ea7b5 SHA-256: ade675c3def63e474ed5076f09175bbf2a95b7083e8bd1747458947912a436e2
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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/strik?keyword=ics+field+guide In PDF document text
    • http://files.dewumine.com/uploads/1/3/1/3/131397946/fujumigexar-rudezigatitiz.pdfIn PDF document text
    • http://maxel.chicagoforchicagoans.org/uploads/1/3/1/4/131407089/xitugedalale_gurokajumaluner.pdfIn PDF document text
    • http://mokaxuvon.visionquest50.com/uploads/1/3/1/4/131453915/zedijudelupujor-fuvamafin-kuronukizago-feribixomizul.pdfIn PDF document text
    • http://files.besmirched.com/uploads/1/3/1/6/131606984/suwip.pdfIn PDF document text
    • http://files.redlotusskincaresalon.com/uploads/1/3/1/6/131636629/logililogone.pdfIn PDF document text
    • https://site-1038946.mozfiles.com/files/1038946/rojupa.pdfIn PDF document text
    • https://site-1039380.mozfiles.com/files/1039380/28644583743.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea63823-c56d-45c4-8d5d-715b1cb84d25/38522514892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16a568f-79b9-4f60-aacc-ce0d5a71d7bb/fisizabepifowalozaniteg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9953c01b-273e-48a6-abb4-50c4ad3980dc/53821106316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66f568d0-acc3-470c-98c5-6c0e0edf328b/mosuzetifeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7793/8583/files/2006_ford_super_duty_fender_flares.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8823/9510/files/bovavusugizegakabojopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7047/5419/files/vadets_workbook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/6488/5916/files/super_smash_flash_2_apk.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000517a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x517A 4820 bytes
SHA-256: cac99b9335863784c9ef82583effb1b4e2f6597d0fe9ca916513d312629e00f7
font_01_sfnt_off000061f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F3 6392 bytes
SHA-256: 7d91612cd0da0fff7b0047a14c6cc7dfcce1a33dff0ee21ecb5b5d5c2d4fcd46
font_02_sfnt_off000072e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E1 10076 bytes
SHA-256: f91234d765124c984904f4808c18432012e894ef66ec8243e89710087de1a52c