Malicious PDF — malware analysis report

Static analysis result for SHA-256 96cca35eb7c08bf8…

MALICIOUS

PDF

42.5 KB Created: 2020-10-31 06:28:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: db7df78e961c521550ebddc99a59425e SHA-1: efd384ec013c70dce27532164d5ddd5959ef6167 SHA-256: 96cca35eb7c08bf8ac24b4a6baf8e40fcbfb292f4283e651bbfc6a48e71c40bb
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/123?keyword=apartment+building+layout In PDF document text
    • https://jugefisofewutep.weebly.com/uploads/1/3/4/3/134368120/3082131.pdfIn PDF document text
    • https://nibafowezibinax.weebly.com/uploads/1/3/4/3/134319588/8350442.pdfIn PDF document text
    • https://filafibiwi.weebly.com/uploads/1/3/4/3/134316544/memuloloburixov_fexuso_gorugasavekana_sajaguta.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/4964280.pdfIn PDF document text
    • https://vajibenutiw.weebly.com/uploads/1/3/4/4/134487234/jazanijaxapid_dogej_jetotofawa_sosazusa.pdfIn PDF document text
    • https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/9358178.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/pudif-ketiri-zemegufawiregip.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/ae191.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/futabudota.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/dd67ae3f5bfe83d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1730/3739/files/game_grumps_quote_of_the_day.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/23404365009.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_off0000694e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694E 5332 bytes
SHA-256: 7f9c271169e9b992c093a36eb924f4591795a033ff0320f2d3be154ac7f42aeb
font_01_sfnt_off00007b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5B 10052 bytes
SHA-256: e49a5b09a713352035279c70f6d2a78c174ac9501912a9c38ad525cb7a72a0e4

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