Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be3d5a29501d216…

MALICIOUS

PDF

67.5 KB Created: 2021-03-30 15:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 06648c590203fd248573a0dd1cf088fe SHA-1: 5292c19d436eb00af8df0bdd961d0e162324ac7e SHA-256: 0be3d5a29501d21697d025462c3d86f2f3f9d4aafa4449e882585fcc775b4659
146 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'soxebez.ru', suggesting a redirection to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to financial analysis, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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://soxebez.ru/wix?keyword=analisis+de+operaciones+financieras PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416664/normal_604ad572589c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369932/normal_5ff71913bb0ae.pdfIn PDF document text
    • http://dilawiputonu.mypressonline.com/problems_of_agriculture_sector_in_pakistan_and_their_solutions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493579/normal_60074c41e741c.pdfIn PDF document text
    • http://kidiwutimako.mygamesonline.org/19762551779.pdfIn PDF document text
    • http://gravkamen.ru/95054216622e6szb.pdfIn PDF document text
    • http://studytogether.fun/ley_de_wattdimjn.pdfIn PDF document text
    • http://rijunoje.mygamesonline.org/jexis.pdfIn PDF document text
    • http://dkblogin-de.best/where_is_the_expiration_date_on_my_graco_car_seatglfsp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449187/normal_603f6368b4742.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476140/normal_5fdf95bd1a9a8.pdfIn PDF document text
    • http://canonsburglake.org/3072434541773hkk.pdfIn PDF document text
    • http://upgrade4me.com/wrong_turn_full_movie_isaiminio16xu.pdfIn PDF document text
    • http://mkuu.club/27581582435ol4hp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380214/normal_605f76585ce91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486987/normal_60079d45b4467.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_605c096f95d34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1ee34b3e-bfcb-4e25-b227-79ffd44eef10.filesusr.com/ugd/9d5096_8a95fbdb46c044099a0ed1d0d2b4eaad.pdf?index=trueIn PDF document text
    • https://9e1bd277-069e-4713-bdcc-1ab96cf790c3.filesusr.com/ugd/5fd2af_6d59f04adeb14fd38c368d7ecaacb9d5.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_off0000cb68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB68 5140 bytes
SHA-256: c402dc7ce6c93fafe08ffc593c0dff2c9f25a5488efbbbef1c5ad697ac1d2f95
font_01_sfnt_off0000dcf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF8 10428 bytes
SHA-256: f71977c6b65cd56e3aeceb73957a91c5c185e1a2fd6c2f710d8ad0059058dd03

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