Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5223ebf91e48b11…

MALICIOUS

PDF

65.3 KB Created: 2021-02-17 10:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f83eeb9790122354723e3e5cee5a659b SHA-1: a97b4565706502a142c332d91b0777b950cc33a8 SHA-256: e5223ebf91e48b11f0f673079ad3b32a19d4532514d9eaedb47f1b1409f9aa53
186 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external links, many pointing to disposable domains, suggesting a phishing or malware distribution attempt. The primary lure appears to be a fake download for 'super mario sunshine multiplayer iso download'. While no scripts were directly extracted, the PDF structure and heuristic firings indicate malicious intent, likely involving redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://baarspo.ru/123?utm_term=super+mario+sunshine+multiplayer+iso+download PDF link annotation
    • https://cdn.sqhk.co/wosuzumamig/Q0hh3Ts/37799642318.pdfIn PDF document text
    • http://dujaliz.iblogger.org/esma_remuneration_guidelines_aifmd_2013.pdfIn PDF document text
    • https://nigerizebamogut.weebly.com/uploads/1/3/4/5/134596745/sasiwemapif.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/10qOL5T/hex_stars_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zabitokepum/BzO76hj/36116336934.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/c6iibXh/6793573605.pdfIn PDF document text
    • http://dadosib.22web.org/15165153450.pdfIn PDF document text
    • http://latirogemiwufiz.22web.org/free_printable_cat_in_the_hat_template.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/lofese/formule_chimique_meaning.pdfIn PDF document text
    • http://sugizujesel.epizy.com/assay_of_benzoic_acid.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/android_video_player_ac3_audio_codec.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/amarnath_ice_lingam_formation.pdfIn PDF document text
    • http://tupudenijusab.rf.gd/dd_wrt_openvpn_setup_guide.pdfIn PDF document text
    • http://penevebepor.epizy.com/fda_ind_safety_report_template.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_off0000c2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AE 5496 bytes
SHA-256: 1d806420fac267b91a6c0aba18e52389132a0dcb5f0f049c308fb68e86a0ae2f
font_01_sfnt_off0000d540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD540 10344 bytes
SHA-256: 1c1a61d739543d0e27ba87c20f64eac6f1a00f3c85adcfbfc497775d05844e79

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