Malicious PDF — malware analysis report

Static analysis result for SHA-256 083330cf298f0eb7…

MALICIOUS

PDF

46.3 KB Created: 2020-10-07 17:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bc100d5428373856f4c04cb6d2eb7d62 SHA-1: a24cd3b3e0a74165c62d6b45784180285713f173 SHA-256: 083330cf298f0eb7c091a201b1fe7cea883ea6e2614628d054d6abe914ff5597
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/strik?keyword=poe+ranger+fast+leveling+guide In PDF document text
    • http://suvetuxag.cattlemansweekend.com/uploads/1/3/1/3/131382271/loduluvaf.pdfIn PDF document text
    • http://files.maggiemcconnell.com/uploads/1/3/1/4/131453486/gobinalevapisadipoba.pdfIn PDF document text
    • http://files.kandhoo.com/uploads/1/3/1/4/131454536/3908544.pdfIn PDF document text
    • http://zarako.horseshelpingpeople.net/uploads/1/3/0/7/130740444/kuxirodifeketetake.pdfIn PDF document text
    • http://jojusexeg.emparty.space/uploads/1/3/2/6/132682905/a839d12399.pdfIn PDF document text
    • https://site-1048442.mozfiles.com/files/1048442/firujele.pdfIn PDF document text
    • https://site-1037204.mozfiles.com/files/1037204/zememed.pdfIn PDF document text
    • https://site-1044019.mozfiles.com/files/1044019/zunonafeviboxikodowoxirej.pdfIn PDF document text
    • https://site-1037079.mozfiles.com/files/1037079/vosaz.pdfIn PDF document text
    • https://site-1037121.mozfiles.com/files/1037121/94971068747.pdfIn PDF document text
    • http://files.jasonholstineministries.org/uploads/1/3/1/0/131070791/16cae4823d8cd8.pdfIn PDF document text
    • http://kaxonoro.francais.brainintegration.net/uploads/1/3/0/7/130739163/gobin.pdfIn PDF document text
    • http://files.atlanticirishfest.com/uploads/1/3/1/4/131405977/mopiduk_larux.pdfIn PDF document text
    • http://files.nfamma.com/uploads/1/3/2/6/132680813/tetaw_pozupapamakej_kafedurobavafu.pdfIn PDF document text
    • http://rebazak.12gents.com/uploads/1/3/0/9/130969140/6457769.pdfIn PDF document text
    • http://zigumuxud.currentvictorian.com/uploads/1/3/0/7/130739142/4455856.pdfIn PDF document text
    • http://givop.ciwoa.org/uploads/1/3/0/8/130813834/wowuwilo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000779a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x779A 5136 bytes
SHA-256: 39eb9d70913f3231ec93d8bfd480c8f72833dbfddb92bf2578cce6ce2977896f
font_01_sfnt_off00008929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8929 10260 bytes
SHA-256: d987120894ac62037dd92e9afdbd179b5f7b920bd46c30ecb4e4cf97208595ba