Malicious PDF — malware analysis report

Static analysis result for SHA-256 93df362d6aa70e13…

MALICIOUS

PDF

44.7 KB Created: 2020-10-02 21:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 34e372a7312412c481f11e00c1d69fe7 SHA-1: dcacc52e7fc671c7c81eb89df79ae0a29975e953 SHA-256: 93df362d6aa70e135792970bafeabb9dea8de8ae844217dc1a306b10bec90e95
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/pify?keyword=auto+go+mobility+scooter+battery In PDF document text
    • http://nepodo.soultreeevolution.com/uploads/1/3/1/4/131438873/jijux-porote-sesewegas-fojadafemuka.pdfIn PDF document text
    • http://bafiwufor.activistchannel.com/uploads/1/3/1/3/131383949/9191540.pdfIn PDF document text
    • http://files.trippjcrouse.com/uploads/1/3/1/4/131454040/wumodavob-gigodi-kaboveb-vutudelipidi.pdfIn PDF document text
    • http://subok.naturallyroyal.net/uploads/1/3/2/8/132814930/vumodudu-tetowosod-womomeba-biburove.pdfIn PDF document text
    • http://vimalomu.ipa-ok.com/uploads/1/3/0/7/130740074/721c700465db.pdfIn PDF document text
    • http://nadevop.villalta-artgallery.com/uploads/1/3/0/8/130813528/kemivozefopos-kubilinit.pdfIn PDF document text
    • http://files.shoplostandfound.com/uploads/1/3/2/6/132681829/7669032.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/34e22db5-ddd8-4cc6-8a9b-46c6b3232e35/telazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fa085ff-8baf-4325-933c-ec868f84214e/dutofikubafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e544ebe-54de-4b93-881c-89235f327e34/sunalawofepawisitekivun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5221/1099/files/dread_helm_5e_price.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1019/4582/files/easeus_pctrans_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8605/2504/files/39947457462.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
🗂 Part of campaign: ipa-ok.com 5 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E3 5348 bytes
SHA-256: b194f613801440dc9e458e7ec561584a50be7f75e24557a8d6c66fbe01e64e56
font_01_sfnt_off00008306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8306 10200 bytes
SHA-256: a0cbbdae7417b33ea17eee12e754560650c5c1c4531835a57a2de2fa82a5d627