Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e0418be6eb47a6…

MALICIOUS

PDF

85.5 KB Created: 2021-03-24 23:48:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ec1d37248fbe1f61d541823abec500ac SHA-1: 34f0178437d803ecd85cce3f571ca3720ed17845 SHA-256: 69e0418be6eb47a68a21cb429316bd25adf0d32c4df741e833ba125f54d7ffc6
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as a link farm, containing a large number of external URLs pointing to disposable hosting. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing trojan. The embedded URLs suggest an attempt to redirect users to potentially malicious or phishing websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=what+astrological+sign+is+april+20th PDF link annotation
    • http://moxegelubopidi.sportsontheweb.net/purijagesoxapojajovipef.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/8ghjxhc/pipizejejegawalokadoduda.pdfIn PDF document text
    • http://fesebenawasoz.iblogger.org/35259902401.pdfIn PDF document text
    • https://cdn.sqhk.co/dopebuxoz/fgdjfHq/kindergarten_curriculum_animals.pdfIn PDF document text
    • http://linodogeb.scienceontheweb.net/77460986982.pdfIn PDF document text
    • https://cdn.sqhk.co/bikuwizatag/hipifjh/find_area_of_triangle_worksheet.pdfIn PDF document text
    • http://pejokepi.mywebcommunity.org/39627353649.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/d62jcif/the_culture_of_poverty_theory_states_that_poverty.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/Diejhgh/13623657322.pdfIn PDF document text
    • http://xevapol.22web.org/affairscloud_monthly_current_affairs_free_download.pdfIn PDF document text
    • http://marifivelaj.mygamesonline.org/heliogbalo_el_anarquista_coronado.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_6202a50b10c048878c66b81bef8014d6.pdf?index=trueIn PDF document text
    • https://b3709dad-42f4-4621-9b7e-74d31ca978cd.filesusr.com/ugd/f91cf1_71cd7cdd563240d3a25705faf39d09e3.pdf?index=trueIn PDF document text
    • https://5f8b0e40-2141-4341-98ab-6145db4b8156.filesusr.com/ugd/2072cd_daa0cd9daf4b41f18ddc05f3b2d0d9e1.pdf?index=trueIn PDF document text
    • https://27a83426-c768-4525-a63d-b5b732cca755.filesusr.com/ugd/28b3f7_3a3bd7b6316d4785945e39487aadf5fc.pdf?index=trueIn PDF document text
    • https://b6f97e74-198a-461d-a312-d71b9712332b.filesusr.com/ugd/a2d007_9780a124e73740fc8de34f7ea17b2492.pdf?index=trueIn PDF document text
    • https://fc060a1e-8c1d-4b7d-bafd-75f79d4c6355.filesusr.com/ugd/c0a468_24643248fcc147f79df4748ae42a280f.pdf?index=trueIn PDF document text
    • https://cc0b58a5-7bf4-4b41-9cd7-d9bc0cd2cc6f.filesusr.com/ugd/6dc98b_89fcb57a0e234fb994e33fa2c56e1789.pdf?index=trueIn PDF document text
    • https://fa202315-5cd5-4006-9a99-7c5d4406650e.filesusr.com/ugd/61804c_cc398462345141b0a4029ff814057a02.pdf?index=trueIn PDF document text
    • https://a12a05ab-6462-4855-b086-b0a2a961d6d8.filesusr.com/ugd/2c76f4_49d29ad557a74429a67755c37aa85468.pdf?index=trueIn PDF document text
    • https://e1ca4115-fb55-43f9-84f1-eaf814f8c83f.filesusr.com/ugd/18122d_30d35ea4662445d0a33c946375f7a552.pdf?index=trueIn PDF document text
    • https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_8495d427a63d48caa76d0aa398d4fd0c.pdf?index=trueIn PDF document text
    • https://a79fbd7c-12a6-44fe-9d3c-43dc2b0795a8.filesusr.com/ugd/f95141_2cee78374bd34b798fa0e79eaa456a62.pdf?index=trueIn PDF document text
    • http://zepizevut.atwebpages.com/39508057127.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86E 5484 bytes
SHA-256: 06f0bd6f88713a4188280eabe782c8084a55cf191eb53c5b236e25d2e89e3807
font_01_sfnt_off00010b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1F 11112 bytes
SHA-256: 8d230b1ef0f5a4e103ec701964e920ca2811cf6d07bbb7c0911b38047cda6b74
font_02_sfnt_off0001309c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1309C 16348 bytes
SHA-256: 7ea4ad8fabf58a022be5f422cdf71e1d18c834a5727f5ba12988ec6015bab3a1