Malicious PDF — malware analysis report

Static analysis result for SHA-256 727e4cb8e85adeaa…

MALICIOUS

PDF

79.1 KB Created: 2021-03-09 21:31:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: f79c4554a3105a964efb9a97459fa381 SHA-1: c02e345a25cde59c7727f6cc0f10d48b94ab6e27 SHA-256: 727e4cb8e85adeaa190455154b3a2a12ec0e09290db19623441e798fe34c8b17
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to a specific location, likely to trick users into clicking malicious links.

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://xajibur.ru/wix?keyword=broadway+bus+terminal+paterson+nj PDF link annotation
    • http://fullpisetc.ru/moongrave_fane_hard_mode_guidew3ajo.pdfIn PDF document text
    • http://load-bcp.com/80344897490xfaje.pdfIn PDF document text
    • http://doordash.fun/6210063078uiaji.pdfIn PDF document text
    • http://govuled.mywebcommunity.org/74709485719.pdfIn PDF document text
    • http://br1.red/57973152048y7eg3.pdfIn PDF document text
    • http://community-day.ru/buxesujibemefilimobu7lpbz.pdfIn PDF document text
    • http://scoretdho.best/87928648081gtx35.pdfIn PDF document text
    • http://tuxesimufimiti.mypressonline.com/data_abstraction_and_problem_solving_with_java_3rd_ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476294/normal_603e7557766d5.pdfIn PDF document text
    • http://fuxisileza.mywebcommunity.org/la_sibila_libro_de_los_sueos_gratis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444643/normal_5fe41bb86b2cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382966/normal_5fec17539fa7e.pdfIn PDF document text
    • http://shimano-stradic.ru/955105031216l30n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470835/normal_5ffa598f9c12e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/genukopapovixo/partnership_account_format.pdfIn PDF document text
    • http://turixupifebut.epizy.com/hdfs_command_line_cheat_sheet.pdfIn PDF document text
    • http://texazufuvo.rf.gd/35-_1_human_body_systems_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/dr_axe_candida_diet.pdfIn PDF document text
    • http://pidekel.epizy.com/58286160574.pdfIn PDF document text
    • http://bebovufuvuji.myartsonline.com/value_based_education_in_hindi.pdfIn PDF document text
    • http://dafemekadur.epizy.com/it_project_manager_cv.pdfIn PDF document text
    • http://guseboses.atwebpages.com/a_christmas_carol_2020_where_to_watch.pdfIn PDF document text
    • http://jirizaxewusi.epizy.com/30501548883.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96D 5448 bytes
SHA-256: 50e71ba38d745ff2f6991ac6732806d7f1234c692a2ef3abf811e99477a98657
font_01_sfnt_off0000fbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE2 10640 bytes
SHA-256: f36ca6b66a2472a649290fd45cf13c73bf65881616e32db3899dfaea8cf4239b
font_02_sfnt_off0001200c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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