Malicious PDF — malware analysis report

Static analysis result for SHA-256 473d7ab662c32c95…

MALICIOUS

PDF

85.5 KB Created: 2020-12-22 01:19:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 49708c20401b2a013863fd4f98c125b3 SHA-1: 4d4ce848b6cc075763e31b3d095f2255ab8f3c59 SHA-256: 473d7ab662c32c9566030c1a8a1692137dd2577611c47dbac29c3251a9e07e0e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or social engineering attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/123?utm_term=images+of+happy+birthday+sonal+cake PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418381/normal_5fb59a487551f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static1.squarespace.com/static/5fc36103405d5340f33982e4/t/5fcef241ba7003536e9ec1ac/1607397955465/jomuwajaximo.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/must_have_android_apps_reddit_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/zizapepiwoz.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/63492980462.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/83761684069.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdeb01b9ec03672fa68f86/t/5fcee9d98b174454e991bc0b/1607395802267/free_vr_horror_games_ps4.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe11ecc0e0ba31f9ebb695a/t/5fe124ece2ce7e41a513f10e/1608590573343/nulabekaguzomolivexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfd2921f-d92f-4e43-9b3e-c42bac656ff3/tadovizafobodil.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/gibuzejotedosavubewelotux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36b024af-3e45-4158-9701-bc5449ed9635/31089222206.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD2 6588 bytes
SHA-256: 4e1a9c4cb32f1bc4ff176ae4dc1460c31b2d267bf2def0252f23ad2731e7be72
font_01_sfnt_off0000e04b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04B 5812 bytes
SHA-256: 6be300603a8e0de3f35c785f2a6e4568dfc19e53bcb6f78a923a5df4df19b255
font_02_sfnt_off0000f3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E5 9448 bytes
SHA-256: 06f7ae8539c383ec86fbad03565719b78c964e52948a6520ce923b8f4755d3f9
font_03_sfnt_off0001110c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1110C 9996 bytes
SHA-256: d15dfb36f805afe9df210409b09057a011d063158d219c817f15ac33e0e4cd38
font_04_sfnt_off0001334a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1334A 5892 bytes
SHA-256: 999d228e0dca35f64f8cef591b26482cf5ea47b168b0ac1bbc23f4715a3c2398

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