Malicious PDF — malware analysis report

Static analysis result for SHA-256 957586c229e8d745…

MALICIOUS

PDF

76.4 KB Created: 2021-02-11 18:54:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e1ab797c8235f6dada0d2d410d988185 SHA-1: ad6bfd5f2637e3f8d33290e786352964ab758f0c SHA-256: 957586c229e8d745ae9b60832688f00dfb63e1b82cbb02657b42939fffb41d3b
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one pointing to known malicious redirector infrastructure. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting a phishing or spam campaign. While no scripts were directly extracted, the presence of embedded URLs and the ClamAV detection as Pdf.Phishing.Trojan strongly indicate malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=manual+reloj+casio+f+91w In PDF document text
    • https://cdn.sqhk.co/lijipatalenu/Bm7Yiag/tiwikoruvavuwifulebiba.pdfIn PDF document text
    • https://fivipogokofabid.weebly.com/uploads/1/3/0/7/130776003/denofafexogoponubote.pdfIn PDF document text
    • http://idealica-it.website/3133420729xh9ua.pdfIn PDF document text
    • https://nawawedivoxoni.weebly.com/uploads/1/3/4/7/134719505/569d891b.pdfIn PDF document text
    • https://dunokosira.weebly.com/uploads/1/3/5/3/135349308/7116967.pdfIn PDF document text
    • http://opssmall.space/periodic_table_scavenger_hunt_answersy7ggm.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/njgGETb/declaration_of_war_december_8_1941.pdfIn PDF document text
    • http://world-wildshop.com/jujizisifijesejupulu1s9cw.pdfIn PDF document text
    • http://dexowowijovovu.iblogger.org/mathematics_syllabus_for_jhs_2012.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/padomafisizutoduk.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/luramamelolem/29100150879.pdfIn PDF document text
    • http://vaxuxosubize.epizy.com/manual_bls_2017_espaol_gratis.pdfIn PDF document text
    • http://xozodijavoxovun.epizy.com/how_to_improve_your_vocabulary_skills.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/setipub.pdfIn PDF document text
    • http://ruxuvejefo.epizy.com/61791737976.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/command_and_conquer_generals_crack_file.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/emiway_songs_machayenge.pdfIn PDF document text
    • http://duloduxu.epizy.com/navotebivefixefoxididi.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/allergy_information_meaning.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_off0000ead1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD1 5256 bytes
SHA-256: 7cfbe2c7d6154ae8515e828262174ed009f6803c14a93385259d5375e065addc
font_01_sfnt_off0000fce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE2 12116 bytes
SHA-256: 3b96d0790546bd356829db9d4340d41c63b6a091b48dc36efe1dc2b828d02bc4

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