Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa0076ebdc766ea2…

MALICIOUS

PDF

118.8 KB Created: 2021-06-11 04:09:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 85682adbf4421ed684b8138f97656a04 SHA-1: df4f994b46f049519437627f7ccb9e80659fed90 SHA-256: fa0076ebdc766ea2bbb11a13a2226c949a2965155dc65c1d2bf279e130008d09
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary external links points to 'https://irlanc.ru/pbw?utm_term=igo8+harita+indir', suggesting a lure for downloading content. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or malware distribution. No scripts were extracted, but the structure suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://irlanc.ru/pbw?utm_term=igo8+harita+indir PDF link annotation
    • https://lerexujirizafet.weebly.com/uploads/1/3/4/3/134344290/2324065.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387807/normal_604df4c82a44d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415055/normal_5fdbec42ab5f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413112/normal_5fd83503d37e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381318/normal_600d65747e798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476453/normal_6056d2b29629b.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4392857/normal_60afe9a386b81.pdfIn PDF document text
    • https://votobadopa.weebly.com/uploads/1/3/1/4/131483772/218034.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392199/normal_5ff69f2b41d78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5fd1796d2fb2c.pdfIn PDF document text
    • https://rufudejipuxege.weebly.com/uploads/1/3/5/3/135347647/8e41fa.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/8f832f45-07e6-4c10-a4ba-11002e424239/solonoduvenipuwepit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc124ca2-efd6-4225-b964-27d526816e2e/komawibifavilomoxikanuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1b3c492-9073-407e-981b-8d6074f206ce/jemufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759c69dc-9d70-4809-b02f-5ebe6f948f72/forza_horizon_4_apk__obb_download_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d026d6c-a86a-41b2-9607-f9ebf434f8db/what_careers_can_you_do_with_a_civil_engineering_degree.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6792ec48-71a4-4b87-b19f-8c8110531487/zebegokadutosedimidogesen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95682426-2d2a-437c-8796-f8c32c198ceb/zutusiganonesofarem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e8ab6e6-c18b-417d-9d6b-38d16c047843/xavubanosupot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cecb1645-5aab-4350-9b06-dcc1a095ee73/suxigupanego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ddc21ec-8f3a-4449-a75f-6e2cdf11cc9b/bartolome_de_las_casas_destruction_of_the_indies_quizlet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57434c91-4154-4489-8ee9-7980667bff2a/zefazodekojixukabujanomil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90618a4c-266c-4b23-9e01-5735ebe03c7c/bebapewomezasiratejexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce4baa68-c25a-45e6-be2d-f9108bb9d519/candlestick_charting_for_dummies_free.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_off00018c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C27 5008 bytes
SHA-256: 158f2477a3c784f904c57e671fa64ddc2f3cf10646d5f5c886944848c098ac4d
font_01_sfnt_off00019d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19D27 15344 bytes
SHA-256: d86a92e1c196e84a9f0027c358c21ec0e8b6f43e461ae25057173b8cc6688d07