Malicious PDF — malware analysis report

Static analysis result for SHA-256 7403573a381da87a…

MALICIOUS

PDF

69.8 KB Created: 2020-12-23 05:58:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 4321db8603ac64071ce8d3e25232dd7b SHA-1: dc978d6fe5297bafdff8306e836796a69bc5a492 SHA-256: 7403573a381da87adda8c3580dc6b5cd87306be1c9aa5c554a6815d9f91b3e73
214 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for linking to malicious redirector infrastructure and for being part of a link farm. The embedded URL `https://traffmen.ru/strik?utm_term=bad+day+quotes+for+him` is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=bad+day+quotes+for+him In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373522/normal_5fb42133172cf.pdfIn PDF document text
    • https://risimapi.weebly.com/uploads/1/3/4/3/134321435/jasevabexuniw-nefawofujul-pirem-xolagitixakakel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455197/normal_5fa51dbe68930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fab5f7d93c54.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/kabefabavajuxibo.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/d5a20efa-c85c-40d8-8001-2c243e196fd7/bobimupoxik.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/plane_ticket_template_present.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2d3cd6d-467b-4d26-b6e1-091121c3bdfc/gazeregamedokiledejate.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1a9b80b6b03258f3af046/t/5fc56d415147b14804e9a231/1606774083820/tuck_everlasting_free_online_book.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/xizejajejetuguzet.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/android_camera_preview_black_screen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f152d41e-a5e5-40c3-91ff-140fd56413c6/onan_generator_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/car_audio_capacitor.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_off0000d63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63C 5392 bytes
SHA-256: 8028adaa05354e61256de9f5080de71eedfa5a54ccfe16a3eeadaa77216215fe
font_01_sfnt_off0000e86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86C 9952 bytes
SHA-256: 359d83df4c6d4ef43d3b09de95fad0a52b4126e41ff86a103644da2b7b78d936

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