Malicious PDF — malware analysis report

Static analysis result for SHA-256 014fca612f075aed…

MALICIOUS

PDF

75.0 KB Created: 2021-03-11 12:13:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: afee1f2051e13d70f223daa3a3eecb90 SHA-1: 41db4c9915ad49f492f4a1eff2e5906812263809 SHA-256: 014fca612f075aedc17e422b0886898bc7ba4f116a6ace21a756af5e687f2c1e
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The document body is heavily obfuscated and appears to be a lure, possibly related to 'Elite Dangerous' game guides, to drive traffic to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://zajinet.ru/123?utm_term=elite+dangerous+eddb+guide PDF link annotation
    • https://cdn.sqhk.co/vawupemowa/0rgjid6/70508672435.pdfIn PDF document text
    • https://rekasefuwe.weebly.com/uploads/1/3/0/9/130969231/9949302.pdfIn PDF document text
    • https://gozobamo.weebly.com/uploads/1/3/4/7/134714837/dolovawojukomi.pdfIn PDF document text
    • https://maremuwalivode.weebly.com/uploads/1/3/4/6/134632863/8709713.pdfIn PDF document text
    • https://cdn.sqhk.co/tegimatararo/hhhcyih/kavakapibinilub.pdfIn PDF document text
    • https://denutuzuno.weebly.com/uploads/1/3/4/7/134706868/4110305.pdfIn PDF document text
    • https://fozanisatede.weebly.com/uploads/1/3/4/6/134691357/6893199.pdfIn PDF document text
    • https://kadogejajufa.weebly.com/uploads/1/3/4/7/134717900/pogajuxafedep_risebatizep_venaj.pdfIn PDF document text
    • https://sadozilodefizon.weebly.com/uploads/1/3/4/6/134659806/gizowuno.pdfIn PDF document text
    • https://cdn.sqhk.co/kufagilan/KzUjhUV/best_punjabi_video_status_for_whatsapp_download.pdfIn PDF document text
    • https://fujulisu.weebly.com/uploads/1/3/4/0/134042697/rokele.pdfIn PDF document text
    • https://fumabufoduf.weebly.com/uploads/1/3/5/3/135313851/zobamavenomegof.pdfIn PDF document text
    • https://xipasole.weebly.com/uploads/1/3/4/8/134853136/6def3028e9ac476.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/vnjhrIH/stack_runtime_in_python.pdfIn PDF document text
    • https://buzufurabobozu.weebly.com/uploads/1/3/5/3/135304208/e10194bedb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://49b7c339-fea6-4bb3-bf7b-ca47af5263df.filesusr.com/ugd/6ca12d_fb2f5191219a47029ae9082311b9a864.pdf?index=trueIn PDF document text
    • https://52468903-0e2d-47c5-babb-61e1d305d291.filesusr.com/ugd/32777b_09fac70a041f4b1ca92e5bf07b052d06.pdf?index=trueIn PDF document text
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_65d099ce82a34fdf9e0fb966f67c3133.pdf?index=trueIn PDF document text
    • https://fecd0c08-032d-4b8b-b26c-6108aca7a00f.filesusr.com/ugd/a87c8b_ad589eb44d384362a32bd28286a130d3.pdf?index=trueIn PDF document text
    • https://4465b75e-e642-4f53-8c89-e22f0b9d4994.filesusr.com/ugd/ecd213_14cb18ed21c64d6885b534906ba87990.pdf?index=trueIn 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_off0000e722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE722 5088 bytes
SHA-256: aa3fd4830ceb8b62e916b76b7d9709ed50e05d2070a621f88732c4c694521f0f
font_01_sfnt_off0000f87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87B 11516 bytes
SHA-256: b414dd80337ffae2c38e1a1c7ac50317f721c96ce80a1a9a78e5855216408754