Malicious PDF — malware analysis report

Static analysis result for SHA-256 f20789608e0f1f4b…

MALICIOUS

PDF

76.5 KB Created: 2021-01-01 08:27:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bc062935a790681e57bb41ae9cdbf7ee SHA-1: bffffba04b112f59b08d5006c6110d88f69ed57d SHA-256: f20789608e0f1f4b8b906ef1829a7bf40479ab63043f0b9b66994e7cc33985d5
214 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a large link farm. The document body, though heavily obfuscated, appears to be a lure related to 'Callaway golf set edge'. The presence of numerous external PDF links suggests a campaign to distribute more malicious content.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/strik?utm_term=callaway+golf+set+edge In PDF document text
    • https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/3349827.pdfIn PDF document text
    • https://padilokemim.weebly.com/uploads/1/3/1/3/131381900/valijawebumev.pdfIn PDF document text
    • https://gebawifu.weebly.com/uploads/1/3/1/4/131483167/8058545.pdfIn PDF document text
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/be0e18c29980.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/80f858ada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389830/normal_5fe11f42e9e2d.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/dozore/4g_lte_switch_apk_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/lazuwibud.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/79031488208.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/lewevut.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/97053433658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beae84bc-f9ef-4586-8def-14379845eb64/97790406634.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/competitive_exam_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adefa9cc-6488-48d8-87de-33aa62af8bac/nozepiwuzenekolexoxe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7F 5076 bytes
SHA-256: 4e2e9cd7cd05298c4a68cf4d3c842d4d1c9fb35de4ba272111648e3ea38492b4
font_01_sfnt_off0000ebf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF8 10324 bytes
SHA-256: d9d0c8651b2feb16727bc0d3c5034412882dca815b151951f6d18ac18a7d1256
font_02_sfnt_off00010f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F83 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

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