Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee335c9adeba9058…

MALICIOUS

PDF

102.2 KB Created: 2021-03-04 05:30:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 708e9ae71ed57c29311277ccb3125623 SHA-1: 8fef129ff2a5992ebf7b75eae5b03e24f7c5a671 SHA-256: ee335c9adeba9058793d33da8dc91c1304adefab0d08c626bae17cc7097ce26b
126 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains numerous external URIs, including one pointing to 'lozipotod.ru', suggesting it's designed to redirect users to potentially harmful content. The presence of embedded URLs and the overall structure point towards an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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/wix?keyword=personal+statement+on+an+apparel+line+limit PDF link annotation
    • https://cdn.sqhk.co/nuvurero/jhWr1gi/domino_s_pizza_cumbres_elite_telefono.pdfIn PDF document text
    • https://zuverikaniwofu.weebly.com/uploads/1/3/4/1/134108987/920a314b53d.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/gifhg87/tiberius_fs_first_strike_t15_pdw.pdfIn PDF document text
    • https://netevidogewe.weebly.com/uploads/1/3/4/7/134715311/1532798.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/aMInhFf/counter_terrorist_2_gun_strike_hack_apk_download.pdfIn PDF document text
    • https://zajoralesame.weebly.com/uploads/1/3/0/9/130969459/3530249.pdfIn PDF document text
    • https://cdn.sqhk.co/nububufi/SghdjaY/fancy_pants_adventures_3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492918/normal_5fed6dc4b9dbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450724/normal_601f5594c66a3.pdfIn PDF document text
    • https://risovokoxenixe.weebly.com/uploads/1/3/3/9/133997247/82c94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389809/normal_5fd9ea9e10a46.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/beyblade_metal_fusion_pc_game.pdfIn PDF document text
    • http://novozozoto.epizy.com/string_format_integer_python.pdfIn PDF document text
    • http://padanejelupe.rf.gd/18938124094.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_off000156e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156E2 4968 bytes
SHA-256: a519c6cc8352ff15ee4961fbe5ad8f09fbfa9d78141eae7834f52b4b7f732746
font_01_sfnt_off000167ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167AB 10472 bytes
SHA-256: 7a9ab73d2f08ad13028e93a6498c244d84179f7251c91d1472fd9844591b927b

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