Malicious PDF — malware analysis report

Static analysis result for SHA-256 462c064f9b6efc2e…

MALICIOUS

PDF

36.6 KB Created: 2020-10-15 11:11:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2b59d0852bced08cbffa48a3cc4e1d99 SHA-1: 2fe183a1c5284eb157cc4127d65ccbbd9617f2b3 SHA-256: 462c064f9b6efc2e5d632108b44184b5a855fc86c232370d9b199d341953195a
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to disposable hosting and redirector infrastructure, indicating a link farm designed for SEO manipulation or malicious redirection. One prominent URL, 'https://ggtraff.ru/123?keyword=mushaf+novel+part+2+free+download+pdf', is explicitly flagged as malicious redirector infrastructure. The document body, though heavily obfuscated, contains similar URLs, suggesting the primary purpose is to drive traffic to these malicious sites.

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=mushaf+novel+part+2+free+download+pdf In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/zikarab.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/logape.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nipomomuka_gisotufeje.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/cfff6.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/wewebunovemerifabo.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vunud.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/jabazotibo.pdfIn PDF document text
    • https://zuxuzesis.weebly.com/uploads/1/3/1/4/131438019/bacf1cbf125f.pdfIn PDF document text
    • https://mokitigek.weebly.com/uploads/1/3/1/6/131606839/zekagodakapin.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.pdfIn PDF document text
    • https://dotofinadi.weebly.com/uploads/1/3/0/7/130740455/9913774.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/841c0577-4e51-4a1b-9fae-04785683d9b2/68735790373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57b59c86-87ad-4a42-967a-1f9faa53ca3a/xojal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08137fe1-35e3-4001-bd30-752aa9da1544/laketaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba4c777d-ff02-48e7-b9f1-29676d190d7f/12217563902.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64ff7a3c-d90c-47fe-a1c8-0d6e49a410aa/38486345618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80179407-9bc2-43ae-8199-c8e46d138df3/24276923083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6746db9-2fbf-4cf7-82c8-5035cf87b1c7/52633619675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7488/7573/files/4.8_vs_5.3_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6764/5852/files/arcaea_mod_apk_data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9991/2869/files/weather_in_oaxaca_in_february.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_off0000506f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x506F 5416 bytes
SHA-256: 16f3790ca047da3f92eeaf67a3c52cbea7e0e5b39bca758b680bc3dca277c285
font_01_sfnt_off000062f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 9900 bytes
SHA-256: bf56881f3cfbd4f487f593b6c6f840d579f37d418c5b8daeeebed7ba48376952