Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c40ce048e46f062…

MALICIOUS

PDF

47.9 KB Created: 2020-10-15 18:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 32e3a9e31ec6fa58d54968c5a160467a SHA-1: d2a9bdda2575cfcfaffbe218e0e0ffc731577efa SHA-256: 9c40ce048e46f06276f9ce5f37162ab97dc352179be734a12336a5005d8dc21e
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://gettraff.ru/123?keyword=kci+wound+vac+cleaning+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f87ab038a1e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f880daacb562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f8721f7afefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f872bb81ebf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f86f4bdb2dfb.pdfIn PDF document text
    • https://site-1043647.mozfiles.com/files/1043647/12466442222.pdfIn PDF document text
    • https://site-1040223.mozfiles.com/files/1040223/android_tv_7_1_nougat_for_pc_download.pdfIn PDF document text
    • https://site-1042734.mozfiles.com/files/1042734/kuwewirup.pdfIn PDF document text
    • https://site-1039863.mozfiles.com/files/1039863/sufevewenegerusoxofowuvo.pdfIn PDF document text
    • https://site-1040682.mozfiles.com/files/1040682/5099016575.pdfIn PDF document text
    • https://site-1048528.mozfiles.com/files/1048528/79057705988.pdfIn PDF document text
    • https://site-1041857.mozfiles.com/files/1041857/parojapif.pdfIn PDF document text
    • https://site-1043260.mozfiles.com/files/1043260/63473028980.pdfIn PDF document text
    • https://site-1039533.mozfiles.com/files/1039533/24265514348.pdfIn PDF document text
    • https://site-1039759.mozfiles.com/files/1039759/segomaz.pdfIn PDF document text
    • https://site-1036969.mozfiles.com/files/1036969/toduturikawukazu.pdfIn PDF document text
    • https://site-1044146.mozfiles.com/files/1044146/70847272845.pdfIn PDF document text
    • https://site-1037035.mozfiles.com/files/1037035/gafexatelagiboxuz.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/62401491239.pdfIn PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/dowikisumut.pdfIn PDF document text
    • https://site-1037059.mozfiles.com/files/1037059/5802531630.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://cdn.shopify.com/s/files/1/0483/3771/5363/files/turtle_dissection_lab_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4100/4954/files/melukekal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5447/9515/files/punubusigowalowenif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/47039315548.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F45 5112 bytes
SHA-256: d987c3f7427e1f38bab5e35a20fc5709dc2d7716b4e1477f7c55efd71a13d3fe
font_01_sfnt_off000080c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C7 10316 bytes
SHA-256: 70628ba30e1fb32d8d91142eb705074a9c276944ca393a8fa443b43c88cbded8
font_02_sfnt_off0000a3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C2 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333