Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2a002fdced2e1b…

MALICIOUS

PDF

73.9 KB Created: 2021-03-24 02:35:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 8ef7d7dd14bcee4763bc7c5a738a6dbf SHA-1: 5218caba975bf9968c05fbc90a458de9b3535f0d SHA-256: db2a002fdced2e1b980d7765ce3d77cd7767b127e8a3ec516fd10e8c28a0b962
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious lure designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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/strik?utm_term=john+deere+riding+mower+front+blade PDF link annotation
    • http://crispyset.online/noragokaworifikenevuwu8lwby.pdfIn PDF document text
    • https://zizuvikugit.weebly.com/uploads/1/3/1/3/131384696/ladaledejo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384650/normal_5ffcd8d98e7ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490252/normal_5fe5d2fb0f6e7.pdfIn PDF document text
    • https://ginataxidorivez.weebly.com/uploads/1/3/4/0/134041929/fivuzuzovi_jilitefa_nidozuresen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449397/normal_5fef5124c91c4.pdfIn PDF document text
    • https://manabuvajej.weebly.com/uploads/1/3/4/8/134847277/lumogoxavo_wimudunixowonib_vujunotirobu.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/37094813657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448558/normal_6001369f7f858.pdfIn PDF document text
    • https://gipurafesab.weebly.com/uploads/1/3/1/6/131637457/ae8788923a.pdfIn PDF document text
    • http://manybigs.space/voxuvunifavunimelafarexj672y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_5fe93485d9f07.pdfIn PDF document text
    • http://olymp-trade.top/nilisatigcoem.pdfIn PDF document text
    • http://lipexifinidoda.scienceontheweb.net/what_was_the_last_ipod_nano.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369522/normal_6007ed1be279a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447263/normal_603ef411c260f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401985/normal_602a23fc2a3ff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fidalanono.myartsonline.com/raymond_carver_quotes_on_writing.pdfIn PDF document text
    • https://bf23b77b-49a9-4bef-a898-a03cfb94aefa.filesusr.com/ugd/134172_2c8147be1875421086840040ba334db3.pdf?index=trueIn PDF document text
    • https://ac402fee-74f4-49a6-b5a4-6a03c6a057de.filesusr.com/ugd/b0cd75_d60ba1732bf14246833d0e375c74b767.pdf?index=trueIn PDF document text
    • https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_d3bb48e5f490413aabbfa4cb255e2cc7.pdf?index=trueIn PDF document text
    • http://dajomilot.atwebpages.com/aquacultura_em_mocambique.pdfIn PDF document text
    • https://e791dc30-71fd-4519-a75e-453748eb9c32.filesusr.com/ugd/8a5fcf_8217556162ed4ceaad71df14a79b0ee5.pdf?index=trueIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_df116133041342d2b5e228ff3fe289af.pdf?index=trueIn 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_off0000e2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F2 5364 bytes
SHA-256: a966e7b303a8559d73da9da87d74399054eb25811dd3b4f315828e8d3f754c80
font_01_sfnt_off0000f517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF517 10800 bytes
SHA-256: 66c1cea02904f736c337e559aa0c0eafe2806ea5146dc0675813ebcbb7291630