Malicious PDF — malware analysis report

Static analysis result for SHA-256 31947dfe4c1a9a0b…

MALICIOUS

PDF

78.5 KB Created: 2021-03-15 01:15:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e9843f4ef14eea3d83feaaf2f6549334 SHA-1: 418cb6f5eda55c688266995cef22f6066866cf91 SHA-256: 31947dfe4c1a9a0b2c07a41fe7fa193e0f05c1c2063566ed54f2ea9c73b16c8f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or SEO spam campaign. It contains numerous external links, with a primary link pointing to 'https://jottigo.ru/strik?utm_term=how+to+find+common+stock+dividends', suggesting an attempt to redirect users to potentially harmful content. The document body, though partially corrupted, contains text related to 'common stock dividends', reinforcing the lure.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/strik?utm_term=how+to+find+common+stock+dividends PDF link annotation
    • http://sotarebesowula.medianewsonline.com/97323450501.pdfIn PDF document text
    • http://tuzogat.sportsontheweb.net/37415314220.pdfIn PDF document text
    • https://simavaxefawok.weebly.com/uploads/1/3/4/6/134666246/sarakagidobadalo.pdfIn PDF document text
    • https://pixasowurixes.weebly.com/uploads/1/3/4/9/134904492/c7063305ec.pdfIn PDF document text
    • https://libotavod.weebly.com/uploads/1/3/0/8/130813055/lokududono.pdfIn PDF document text
    • http://kiritisivasol.mywebcommunity.org/2254966542.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/amanda_all_the_bright_places_actress.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://c779a0a5-5a96-4308-8c37-720837e0bdd2.filesusr.com/ugd/4f1d02_7cb0af22038646099da9e9dee5e9385b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xajowu/mopibatadixojoxukovana.pdfIn PDF document text
    • http://vawanumezal.onlinewebshop.net/library_classification_and_cataloguing.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/algebra_1_2017_kuta_software_llc_answers.pdfIn PDF document text
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_cdb1e997e43246b7bbfa31d3d43e77d1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lebejos/fonuj.pdfIn PDF document text
    • https://a0758896-f8c2-4fc9-8c7e-5c1738e8bc18.filesusr.com/ugd/0ce882_bc1e15f61cfe4ee1a79afdba63247b01.pdf?index=trueIn PDF document text
    • http://metomegijat.epizy.com/blending_words_worksheets_for_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/59004444646.pdfIn PDF document text
    • http://zalowakudedakov.rf.gd/what_does_a_rhetorical_triangle_douglass_use_in_his_speech.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/canon_camera_connect_video.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/acr_eular_guidelines_gout.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_off0000e889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE889 4796 bytes
SHA-256: 4861698372f76c0cd1feb1496379eb00acae63cb0d05f6ee3b7a916d9d182e1e
font_01_sfnt_off0000f8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DE 10916 bytes
SHA-256: c337ef987d8f44ad27bcfa9386ea02ef71d8eb54a8ae26b11126e9976548fae0
font_02_sfnt_off00011dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DFC 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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