Malicious PDF — malware analysis report

Static analysis result for SHA-256 58edc332c70bff87…

MALICIOUS

PDF

75.7 KB Created: 2021-04-04 23:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2b2daa21550ff43e9f7c88cd5f4cc2d3 SHA-1: dd4ae1dd60b712769daf49d1035b0b83e4fd33c5 SHA-256: 58edc332c70bff8718c73a38f47bd683b4d05f4ec8ac2f1a452721ec930f6d9c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with at least two pointing to suspicious domains ('maypoin.ru' and 'sportsontheweb.net'), suggesting a link farm or redirection mechanism. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports the interpretation of the document as a lure for malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=yes+please+meals+headquarters PDF link annotation
    • http://xalapuzim.sportsontheweb.net/himno_del_maestro_panama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465555/normal_60299f079283a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410443/normal_6039283c8281d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501380/normal_601e20cbdc6f0.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/lafofovijeneluno.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377400/normal_6005543e91028.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495058/normal_6022adc89d400.pdfIn PDF document text
    • http://dizurexemubegog.mygamesonline.org/wupilitivamelapiretukalid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369183/normal_5ff96a884f344.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/cqNnjjB/magic_poser_mod_apk_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419642/normal_604b641175fe2.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/jbbhgge/96011085416.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/CEVoQjb/fofujezufinewotomobivofo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_606829c914012.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366982/normal_5fe3672cd9317.pdfIn PDF document text
    • https://cdn.sqhk.co/juxezijafoz/wAjajdN/e_wallet_malaysia_application.pdfIn PDF document text
    • http://vebifitapex.mypressonline.com/83691042146.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/018b75c0-fff7-472a-bd8d-ef4d234f4862/lash_extension_course_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3c16989-4598-4e9f-83a5-9ce2766ce823/85680107405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b68eabec-9a39-4845-9444-09dfca9c26de/how_to_reset_cannon_gun_safe_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd9a6fe7-72dc-4409-8e65-00d081dd7ac3/53395221224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8b5661f-3bb7-4605-8de8-965ebbdce3e2/peratawezirusidamosoje.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_off0000ea01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA01 5284 bytes
SHA-256: a74763c7b309fd6796f52642c03ebdb43fa760c4f19d3f28afffdddaa47f6204
font_01_sfnt_off0000fbca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCA 11064 bytes
SHA-256: 5e1a624845b112c4725e9eef38d8874423b0daf9c617cfd33f8352c34eea1c5f

Open this report in the interactive analyzer, or submit your own file for analysis.