Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12dede59d8cf831…

MALICIOUS

PDF

89.7 KB Created: 2021-05-30 21:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b27186f2ecc456facbbb907355d8f687 SHA-1: ddd23bb5e6602fdf6eaac0d6f426e9223ec9abcc SHA-256: e12dede59d8cf8311c754db791e65d9698cc8d0c5b5f3962e7e3d0c3e016500f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://ponafet.ru/strik?utm_term=how+to+build+self+discipline+to+exercise PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485016/normal_5fd630907e02c.pdfIn PDF document text
    • https://jatuxifukonexe.weebly.com/uploads/1/3/4/4/134469885/gidoxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409000/normal_5fe30ca9036e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386089/normal_5fd1be5521edb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445871/normal_5fe3b1c1d481b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470408/normal_606720790c7e1.pdfIn PDF document text
    • https://lomagifotoji.weebly.com/uploads/1/3/0/8/130814873/dukadom_konoxukixo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412415/normal_600037a1da56a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_604047179fb35.pdfIn PDF document text
    • https://tobuzedatenet.weebly.com/uploads/1/3/4/3/134322281/jokanasotazesat_peradodixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409420/normal_60392572a5480.pdfIn PDF document text
    • https://kemipopebu.weebly.com/uploads/1/3/4/5/134585234/verofo-zowedulijesu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402261/normal_5fe58f90e3a7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478688/normal_60054c810d3b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2ee8dba-e52a-47c2-9ac9-b8df06a45d65/vixujigupomaxogitejupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41dfa640-0dd7-4745-90f1-a4bfcaf4701a/descargar_musica_de_los_tucanes_de_tijuana_narco_corridos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed32333-76ba-4aef-b124-131060fbeeed/boxidevufiforesupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a08a5c54-f7ee-4d6c-b887-87f2f1d57d7a/53796429638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8016142-fdc4-4919-b45a-a8505df196d2/la_polaridad_jerarquia_de_los_valores_segun_max_scheler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/374129e1-4e47-48a9-994a-13102bafd1e6/laguvubesuzol.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_off0001231e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1231E 5200 bytes
SHA-256: 81fab6bb20a82005586a23bb48c88678b88f92b83a609bc69043d2218e906f6c
font_01_sfnt_off000134f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134F2 10696 bytes
SHA-256: 90bc43da3051eac6477cfa1e77b875616aff0984207bac47b6b540eb37eca2ab

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