Malicious PDF — malware analysis report

Static analysis result for SHA-256 c873c1d7d7777b65…

MALICIOUS

PDF

43.4 KB Created: 2020-10-28 19:09:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: fc222d50f8aee06455ca4ff220318b8a SHA-1: 0274c739d545f0da9e686cb56e0b8c9bf6349daf SHA-256: c873c1d7d7777b65ebbfee475e6b50cfa8644d12429e43f88bf469b14740d54e
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://ttraff.cc/pify?keyword=snowline+school+district In PDF document text
    • https://labajilawuja.weebly.com/uploads/1/3/1/4/131406369/5775682.pdfIn PDF document text
    • https://votawaxamudogop.weebly.com/uploads/1/3/4/4/134400347/36c6b24706c195.pdfIn PDF document text
    • https://mufanebix.weebly.com/uploads/1/3/4/3/134349193/gevel.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/govenuburobed_lividiguwusorik.pdfIn PDF document text
    • https://tusefekojeseto.weebly.com/uploads/1/3/4/4/134437698/9a17ab848fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_5f962be90f74e.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/xobudulen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f879cec758e2.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/mufalasuborapenatax.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/tatalivevisodem.pdfIn PDF document text
    • https://fukobararusi.weebly.com/uploads/1/3/4/4/134404541/togojini-pikex-tobuwirujonaw-foguna.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/rewizu.pdfIn PDF document text
    • https://xutewosabog.weebly.com/uploads/1/3/2/3/132303209/9551418.pdfIn PDF document text
    • https://pinoxelu.weebly.com/uploads/1/3/4/1/134108818/gosibo_lemobage_nexogeki.pdfIn PDF document text
    • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/pegujuboputokiro.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/nokekul-feboji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417423/normal_5f95d1c333daf.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/xududev-ledavodu-jatulivarolaxe-bixebenal.pdfIn PDF document text
    • https://vosaxoro.weebly.com/uploads/1/3/4/4/134469305/b61d9004.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/2440739.pdfIn PDF document text
    • https://fisizupesaxog.weebly.com/uploads/1/3/1/6/131636899/wutavovi.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_off00006bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB7 5012 bytes
SHA-256: 411422dd9e05299ffbb90ecf737ee073763c84cabce8a67b34db6cba31937001
font_01_sfnt_off00007ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 10328 bytes
SHA-256: d8d8df11c4a2a35713b6946f4fe95d20e6b56ed6bf778b9f6fc473f53437db6e

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