Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c84677beb24dbc…

MALICIOUS

PDF

78.9 KB Created: 2021-04-26 03:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 026feec374c8e85fbc08b131d837c5a6 SHA-1: 4e594771da9f83e2841a2bda34a08c2cbf5d4956 SHA-256: 56c84677beb24dbc4a6d3ee6e4e70e563ce7033edb73bb813961c0c073da506a
126 Risk Score

Malware Insights

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

The PDF file contains numerous URLs, many of which are flagged as unknown or potentially malicious, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to unit conversion, which is likely a lure to disguise the malicious intent. The ML classifier and ClamAV detection strongly indicate malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=cuanto+equivale+3%252F4+de+pulgada+en+centimetros PDF link annotation
    • http://prizinsta.site/kanivili6p6.pdfIn PDF document text
    • http://1xbet-registrat.site/23158361322awrlj.pdfIn PDF document text
    • http://sodaapp.pro/model_336_marlin_30-30yrzps.pdfIn PDF document text
    • http://wewogokuwidu.mywebcommunity.org/38296842186.pdfIn PDF document text
    • http://whowill.ru/bunetanoziwezomimewovud54lur.pdfIn PDF document text
    • http://8bitbeardsco.com/88132267856oe407.pdfIn PDF document text
    • http://bukenisefino.mygamesonline.org/97577409618.pdfIn PDF document text
    • http://front-glass.website/reguxobuber8av.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/asi_hablo_zaratustra_audiolibro_gratis.pdfIn PDF document text
    • https://cdn.sqhk.co/buganixezu/iheqjgk/68332948458.pdfIn PDF document text
    • http://bumaga.bz/wiviletepdhq5r.pdfIn PDF document text
    • https://cdn.sqhk.co/sizafutito/icgXIhb/forest_rescue_bubble_pop_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kozutani/i75idjd/notepad_free_full_version.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/68304638018.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/9855990603.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/11851365549.pdfIn PDF document text
    • https://d4508431-0eee-4913-ac2a-2ec907ed9b18.filesusr.com/ugd/12daa7_ba6369baf96a4ca287f3aaed59fa16b6.pdf?index=trueIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_41ac1f0f4ff449658c4c0c1f9764ecc9.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
    • 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_off0000dc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC05 5772 bytes
SHA-256: 0870c2024cb285da9c55406be1203805ced9d57967c46b63f5cb6961c2b31d59
font_01_sfnt_off0000efa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA9 12600 bytes
SHA-256: 2e284d116110780ffbe5d5ac40ac04c9d5464f3159d1c304dc15d3bcbbd9b825
font_02_sfnt_off0001191d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191D 16108 bytes
SHA-256: f95089c45a512c255e04fff4eb86a50bbe210c04adcc9bc093880eb7f83978af

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