Malicious PDF — malware analysis report

Static analysis result for SHA-256 882f4daa1dd6ded7…

MALICIOUS

PDF

75.0 KB Created: 2021-02-17 02:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8b6a2117a933f60ac2fe78a035a49dbd SHA-1: 1431e305578e6a6b1fd5372bca0b85dd71963638 SHA-256: 882f4daa1dd6ded7c0dde462a673b4f3b13bdca20241dde882a8a0dedc46403e
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with many pointing to disposable domains and exhibiting characteristics of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=shure+slx24%252Fsm58+price+in+india PDF link annotation
    • http://biribekagupelu.66ghz.com/connect_app_for_windows_10_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/p3dFihs/fish_tank_stand_price_in_coimbatore.pdfIn PDF document text
    • http://xojuxegalixiluj.66ghz.com/rikewopanofokune.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389823/normal_6018d35662855.pdfIn PDF document text
    • https://cdn.sqhk.co/zajagatetode/vghhcje/highway_rider_extreme_unblocked.pdfIn PDF document text
    • http://zikemipirelojo.22web.org/57518463601.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_601be3c630881.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zazedosipafefu.epizy.com/cccam_prio_maker_ipk.pdfIn PDF document text
    • http://wegudewabeko.rf.gd/levutuzuzedikuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/accident_report_format_esic.pdfIn PDF document text
    • http://jevoxomififewi.epizy.com/fafonumudefezidufokoparo.pdfIn PDF document text
    • http://dagapevas.rf.gd/2683853403.pdfIn PDF document text
    • http://nabapuxamiluj.epizy.com/progressive_era_reform_activity_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/bass_transformational_leadership_theory_definition.pdfIn PDF document text
    • http://kunizifafam.epizy.com/60087185340.pdfIn PDF document text
    • http://daduzafez.epizy.com/57174669081.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/fomabenovarafivijigatuwo.pdfIn PDF document text
    • http://dosekidonara.epizy.com/89449517636.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/svensk_manual_till_fitbit_inspire_hr.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD136 6056 bytes
SHA-256: fb372335e63f38a4dc426a06d3c2c63811c94d31d9c850ea62c062159d5088f6
font_01_sfnt_off0000e5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B7 10208 bytes
SHA-256: 711317fee6675174f2db42e31c4c2a23e286624a10a1284da91b0b342c03c6d7
font_02_sfnt_off000108e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E7 16164 bytes
SHA-256: 4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349

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