Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c9025252919becd…

MALICIOUS

PDF

70.0 KB Created: 2021-03-02 13:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1e6135c26b48d83ed4adfb3292db8ad1 SHA-1: f9d71915097c6ba87616c6a2e49e2578cee64560 SHA-256: 5c9025252919becd1d22c70e3c4b163a2d8d623ffc63ebfdadb829c434e1c88c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/award?keyword=youtube+videos+of+toy+monster+trucks PDF link annotation
    • http://tafugegajotu.mygamesonline.org/wefopek.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/how_to_play_monkey_business_skid_row.pdfIn PDF document text
    • http://jojazinex.mygamesonline.org/most_popular_st._bernard_names.pdfIn PDF document text
    • https://gepopoxano.weebly.com/uploads/1/3/4/6/134663556/d46ab6.pdfIn PDF document text
    • https://matazesugol.weebly.com/uploads/1/3/4/7/134702103/tebupixa-nudamibe.pdfIn PDF document text
    • https://rebejudan.weebly.com/uploads/1/3/5/3/135316845/wezapajifu.pdfIn PDF document text
    • http://tokesuditetu.getenjoyment.net/55989266962.pdfIn PDF document text
    • https://wonakusoxenim.weebly.com/uploads/1/3/5/3/135340368/xoweni.pdfIn PDF document text
    • https://kepinofex.weebly.com/uploads/1/3/4/0/134017679/gumelekevodisef.pdfIn PDF document text
    • https://posijakafit.weebly.com/uploads/1/3/5/3/135320461/1728241.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/18726226357.pdfIn PDF document text
    • https://vesanalu.weebly.com/uploads/1/3/1/4/131482823/puxumotetopafewa.pdfIn PDF document text
    • https://tofavasexivefet.weebly.com/uploads/1/3/4/5/134578877/vezizubopef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://runoxujozu.rf.gd/non_mutually_exclusive_events_worksheet_with_answers.pdfIn PDF document text
    • http://bolirazebaf.myartsonline.com/8468063330.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_off0000d5f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F5 5252 bytes
SHA-256: 5f5095a62dd3f3af2f2625bc2d5432255a651a9b45d473fdf40d3515ba2d1626
font_01_sfnt_off0000e7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D1 10412 bytes
SHA-256: f706b9a29aaf9813cf50479cc2ff33f64bf630d647d4bffea31f0347f26ddeeb