Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e3d8fb12c3089e…

MALICIOUS

PDF

88.6 KB Created: 2021-03-16 01:55:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 53568dc9708374963f5f859765a19260 SHA-1: b27e1e28e5109e79872701290283c1f4955f50ae SHA-256: 71e3d8fb12c3089e783b89269f3ddc7db6bece07bdf76af3d2eabb08c3871fd7
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains numerous external links, with a primary redirector URL pointing to a site that appears to be part of an SEO link farm designed to lure users with keywords like 'mobile legends item guide layla'. The PDF structure and the presence of external links suggest it is intended to redirect users to malicious content, likely phishing or malware.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://soxebez.ru/wix?keyword=mobile+legends+item+guide+layla PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423154/normal_5fc8f8b324f4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412394/normal_601d364ab8387.pdfIn PDF document text
    • https://mogobuzuxoxede.weebly.com/uploads/1/3/0/7/130740257/9dfed534c4bce3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_601ae8dbb1e7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463528/normal_603c709683042.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369164/normal_5fd792c199555.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424043/normal_5fce35b8a697c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_600a4baba32b5.pdfIn PDF document text
    • https://mufuwavujove.weebly.com/uploads/1/3/4/0/134042856/gupudubututugep-jigenalonurutil-gasekasinebemas.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/2655ecf1-9703-474a-b0e2-0b118ecac64d/which_of_the_following_is_true_about_the_auditors_observation_of_the_clients_physical_inventory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1afbb5a1-3e15-4fa9-98fa-91c2fe6df6ad/2688157943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab466472-6b9f-4f8c-8acf-975c21408509/ravipunenegufakunibod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c09bc17c-6176-41ad-a6e7-9b0f47e7a894/ritiwuburufikinevizakop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759d582d-03dc-4d5a-aa1f-f506e66625a5/94376078642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8944347e-c81a-4ef5-99d3-b0a854eec317/51881683431.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C8 5296 bytes
SHA-256: 970ecb01832788e446b7e8a61c864256d957989186e1ba6c9393a784b7225556
font_01_sfnt_off000124c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C3 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off00012d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D53 11056 bytes
SHA-256: f2daa5fda00283d57853ec3a9efa24b8debae2bfdf08ce348acc0303c12ffb07