Malicious PDF — malware analysis report

Static analysis result for SHA-256 863c2e365cac953c…

MALICIOUS

PDF

77.9 KB Created: 2021-01-25 02:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d23b1496ede7589a45041b533eab0823 SHA-1: 3769910f8787728b9ddbe22f58802ff7a7f3cc90 SHA-256: 863c2e365cac953c1dad005d6829f2c6117ac025e6f59d999671e8415559f9e7
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, suggesting a phishing or SEO manipulation tactic. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a malicious document, likely a spearphishing attachment designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://trafffi.ru/123?utm_term=ar+lower+receiver+dimensions PDF link annotation
    • https://xegokefizu.weebly.com/uploads/1/3/5/3/135323464/441439.pdfIn PDF document text
    • http://gachihyper.xyz/38574948432o2sko.pdfIn PDF document text
    • https://vobudofokivelux.weebly.com/uploads/1/3/4/5/134599261/3424659.pdfIn PDF document text
    • http://kamaz-ftc.com/costumes_for_menw2j4w.pdfIn PDF document text
    • http://foodguideblog.com/lightsaber_forms_star_warst14be.pdfIn PDF document text
    • https://zavitakeji.weebly.com/uploads/1/3/4/9/134904790/d27616b48f5.pdfIn PDF document text
    • http://ersoil.fun/zombie_apocalypse_a_zombie_warningynqek.pdfIn PDF document text
    • https://gumosoxegobekij.weebly.com/uploads/1/3/3/9/133999275/xepidupubaga.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/ampere_meter_analog_2auhdx3.pdfIn PDF document text
    • https://pepigapipewoma.weebly.com/uploads/1/3/4/0/134000130/naropulup.pdfIn PDF document text
    • http://2gusevshop.space/carmageddon_traffic_meaning7u84p.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/vazutelawitokubojlz31.pdfIn PDF document text
    • http://inostrana.com/97922743603juxwa.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/wiremeresegikon/ar_condicionado_portatil_midea_12000_btus_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/elementary_student_s_book.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/hp_2930f_stacking_configuration_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/32723535951.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/tree_diagrams_corbettmaths_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/halloween_maths_colouring_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/1488373192.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/convert_cfg_into_chomsky_normal_form.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF427 5016 bytes
SHA-256: 53fcd535cd136ab95dff0a8389277de510ea6274f0d38f616876922073e61b07
font_01_sfnt_off00010539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10539 10928 bytes
SHA-256: a57e38732d482020d15e5065482a041b03ac09a436b8752a716c5130fc32c0f6

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