Malicious PDF — malware analysis report

Static analysis result for SHA-256 f989ebfe8ebd2a4e…

MALICIOUS

PDF

83.7 KB Created: 2021-01-09 15:20:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8ae779c8c45c0224136c2403f2536b05 SHA-1: 6c09e4e79b834333b70641d03e2e17a835ded820 SHA-256: f989ebfe8ebd2a4e32e672a0e7024e827e8a394cfe9aa2dc0a2b2c9e284337bc
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a large external link farm and a ClamAV detection for a phishing trojan. The presence of numerous external links, some pointing to potentially malicious domains, suggests an attempt to redirect users to harmful content or facilitate further compromise. While no scripts were explicitly extracted, the PDF structure and link farm indicate a malicious intent, likely related to phishing or SEO abuse.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=ryobi+bench+grinder+8+inch PDF link annotation
    • https://tijesefufejeje.weebly.com/uploads/1/3/4/8/134858706/fimuk.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/bujedade-beket-zamimo.pdfIn PDF document text
    • https://zitakusosexozi.weebly.com/uploads/1/3/4/5/134595565/goxuwof-retafox-nalarutuzatux-mevelobelexadef.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/290s7pY/g_stomper_studio_full_version_apk_download.pdfIn PDF document text
    • https://funefazadoma.weebly.com/uploads/1/3/4/6/134648765/19f4dbd3505.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/ihdVb9J/gadebo.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/zolerazowubow/admission_form_numl_university_lahore.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/34547735677.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/darius_top_guide_s8.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/13317189476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04383afb-f032-4e42-a25c-3fbe43d8920a/bisesifofupijoketeduj.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/artist_statement_worksheet_high_school.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_off0001094b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094B 5224 bytes
SHA-256: de410bc1a4e5ae03eee19c1eadadb5cc76685c139b7c771b08ec42f5b1329d7e
font_01_sfnt_off00011b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1A 11676 bytes
SHA-256: 6ac4c727c794ffb186458f79d3999868c4ee859f1fd9b9abde412bfc8b6d38ce

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