Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2ef63892f3c925…

MALICIOUS

PDF

43.0 KB Created: 2020-10-15 03:27:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d172b87de7b044e1d22161baf785c1b4 SHA-1: c464977987315b8aad8cedceea0b117545bfaf36 SHA-256: ce2ef63892f3c925ea1d014d9094ff70e7018c108ad9be0a8d477ee32a56d0de
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=fieldrunners+attack+mod+apk+1.0.15.5 In PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/xaxunidededixiva.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/lixavej_rivutavipulox_vunezikavad_lirumonoguwako.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/44d87feaf8ee.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/tugunari_fogeze_nezejavoz.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/jofamep_xevozurenatef.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/safado-fodidunixoso.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/1429013.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/3905791.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/1/0438/1740/2530/files/7452527171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3986/7559/files/hostess_fruit_pies_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0483/7018/files/lucky_star_bus_boston_to_new_york_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4a23be-09bf-4b43-9d10-6cee56feab67/68336978452.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2906dc2c-1ac9-40eb-845e-f3b09e1a8cfb/ledijafim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f5134ab-8901-4e88-8152-5771c3f518b6/mibinebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/475a334b-5224-4fb7-9034-94278ed3eb33/72883738962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1567bbe6-61b9-4403-b8ff-0dda16e70e42/71676405323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3507e1b5-559d-4c98-8192-da5e685e1aa3/bozusiwajitamerasobumevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec976ca4-f98d-4c90-89dc-d46a32c2f323/vadegidedusijerur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d284465c-1d41-4de9-b714-2ac3c0a7cb83/22457770996.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea1447de-6d10-467f-add6-5ca712d6c234/fubadupapategegokuloma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee65b41f-748f-4482-9b20-49757d34b1a1/semavozugaxiluluzevew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d53247c-5886-42ad-b0c3-41ce5a4db1fd/birasotewanuge.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_off000069b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B1 5588 bytes
SHA-256: f4013ec503173b1dddb03176d745c6110e8d178fef5af0e893d0821876660bba
font_01_sfnt_off00007c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C99 9956 bytes
SHA-256: aa91288f68caa29b7422a9d20b0e8306a0c8b2f267afc71764a56f8f8733c7ce