Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c8db1fa4e1074c…

MALICIOUS

PDF

76.5 KB Created: 2021-03-17 11:36:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5aa3055e9b65a5a3d84040924b3ddc07 SHA-1: c953b2c733a5a5821a26cc09c9519d696639fb0a SHA-256: 11c8db1fa4e1074c4b9b1eb3b29c26c7c2ae052ea1f5d7a6268818c31b660f3f
126 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous external URIs, with one prominent URL pointing to 'fokemale.ru', suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated and unreadable, but the presence of embedded URLs and the overall heuristics point towards a malicious PDF designed to redirect users to potentially harmful sites.

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://fokemale.ru/award?keyword=zbigniew+brzezinski+strategic+vision+pdf PDF link annotation
    • https://cdn.sqhk.co/faserekino/hiGsC8F/jiderunanaxumabifej.pdfIn PDF document text
    • https://cdn.sqhk.co/suwixowefa/E4jbeie/bohemian_switzerland_tourist_information.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/jOgcggV/stampede_temecula_open.pdfIn PDF document text
    • http://xiruzox.mygamesonline.org/wowubituwavetevetot.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/desenogosi.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/rhfjgJa/xenekavokufutaromigarozo.pdfIn PDF document text
    • http://setopin.mypressonline.com/negotiable_instruments_act_cheque_bounce.pdfIn PDF document text
    • http://rizaxezo.iblogger.org/a_scanner_darkly_-_un_oscuro_scrutare_trailer_ita.pdfIn PDF document text
    • http://wejabofilu.iblogger.org/lyrics_seven_years_norah_jones.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_252def4add93430fbb0a46d9a50a5bef.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lewuli/19486037611.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/biboradifukifuku.pdfIn PDF document text
    • http://ruxuvejefo.epizy.com/define_grid_computing_in_computer_science.pdfIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_ca14f42b8597438fb2999adeede462d2.pdf?index=trueIn PDF document text
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_2552970ca5f0419cb8c64366b946a58e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mufukep/new_album_gana_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/jingle_bells_easy_piano_sheet.pdfIn PDF document text
    • http://siwebojik.epizy.com/logical_fallacies_infographic.pdfIn PDF document text
    • https://d0fd53c2-66a5-49f7-a942-a4bfc50892a3.filesusr.com/ugd/11baf9_8031a1ce2fea4b9f8a77d3fe18cf2bc7.pdf?index=trueIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_54da55098de34e1b9e7cd241ed12691d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tapexiw/rigur.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_off0000eb7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7A 5652 bytes
SHA-256: 7ce07999dee06f8672f553877286d16ea8b73d02ccb310863bf063ab83fe6a5b
font_01_sfnt_off0000feeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEB 11008 bytes
SHA-256: ed5d9dae271443348df47cb18e729ec775bf9783de5ba2861f5d79e8c558cf7b

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