Malicious PDF — malware analysis report

Static analysis result for SHA-256 015787ca89ff7712…

MALICIOUS

PDF

77.3 KB Created: 2021-02-26 03:57:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d9729f07aa8360ada94cb0a25647a48f SHA-1: a8675bf544abcddd8c2977835f26a6f6087bdad9 SHA-256: 015787ca89ff77128da8e79ee663eb9ab994d0a8dd6891f33fcbebf327277d71
206 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. Heuristics indicate a malformed exploit stream and a large number of external links, suggesting an attempt to redirect users to potentially malicious sites. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=godsworn+champions+of+ruin+battalion PDF link annotation
    • http://zugapuvu.mywebcommunity.org/93250149255.pdfIn PDF document text
    • https://cdn.sqhk.co/negapevu/hgDheus/president_protection_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zewuxumaro/jjjeicZ/63340562084.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/cWagiUn/where_you_go_pink_lyrics.pdfIn PDF document text
    • https://fosevikotik.weebly.com/uploads/1/3/1/6/131637163/3543764.pdfIn PDF document text
    • http://tewatag.medianewsonline.com/zuwujojaxo.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/begjAhb/mtn_momo_api_php.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/what_is_grounded_theory_analysis_in_qualitative_research.pdfIn PDF document text
    • http://retamos.mygamesonline.org/76760994806.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/65390647798.pdfIn PDF document text
    • https://cdn.sqhk.co/gopefovepagi/Pesphbr/35553551553.pdfIn PDF document text
    • https://tebiwexarug.weebly.com/uploads/1/3/1/3/131380746/d90c77bd.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/sakaburepagase/6010133047.pdfIn PDF document text
    • http://kupuwatuz.epizy.com/mezibekisiluvezimamane.pdfIn PDF document text
    • http://temefolix.epizy.com/18261360237.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/dupirixutukujifiba.pdfIn PDF document text
    • http://luzasuzudi.rf.gd/all_in_one_er_apk_old_version.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/1_centmetro_cbico_cuantos_mililitros_son.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/guided_pathways_four_pillars.pdfIn PDF document text
    • http://kakasis.onlinewebshop.net/70408957854.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_off0000efa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA0 5660 bytes
SHA-256: d3907ec745ab3c277794676f19e8d74f7dc61cee94e37b4929d678bb0e93278f
font_01_sfnt_off000102c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C5 10936 bytes
SHA-256: e430da6886a286380b61d7e8f19b959369a44a169ca3c6c8b0c7e5391d917014

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