Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bba44a63d2f0100…

MALICIOUS

PDF

48.1 KB Created: 2020-10-15 16:45:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1d0100782d51489791c1810adac03e05 SHA-1: 642934b50b56392a59a9dc8628220aafb2808e3f SHA-256: 8bba44a63d2f01009f8002a74264d51772e976c3f085dcc645b7db520ac2828b
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://cctraff.ru/strik?keyword=nist+nvlap+handbook+150 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f86f614703f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368731/normal_5f88181f4b8ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f872b34cf75b.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/bubutowunaj.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dupuvikadijuraxere.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/busixakowun_zefisuni.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/jokixigaxajax.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/5058540.pdfIn PDF document text
    • https://site-1036713.mozfiles.com/files/1036713/12448383635.pdfIn PDF document text
    • https://site-1038363.mozfiles.com/files/1038363/muwuwibopamotitomubode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/adfdb530-db99-4e47-88ee-375850dbbf69/kujexivijigipogata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/410380be-3a83-4c0a-a8b0-c4423e64511d/72254439206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85580809-4c99-4cfe-923e-d655a1655585/41677395580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0475edf1-18a3-48b1-915f-4229b3e621c6/34431840058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d7a7c5-9ac0-4967-8069-ec5eed286bcf/vekejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1412/2404/files/33118769031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4003/8298/files/debabimemexufodun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8252/6119/files/83513589161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/lunifejoguv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d76d5c4-c33c-40c5-bff4-c7afb5066eee/kamilebumutomejowugi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7feb318-805d-404e-8ca6-183b7158cd4d/kuvulukan.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6668 5172 bytes
SHA-256: f228a3dbe8bdda53a97b3c8a548a0730e10b8a94c591174913d9140141f40025
font_01_sfnt_off000077e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E6 13628 bytes
SHA-256: 9ae3708851bdeea7a4222f0858ec8f51b79683b129126c1affb7435a327e4bc6
font_02_sfnt_off0000a28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA28E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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