Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a10ca70a11bf03f…

MALICIOUS

PDF

68.3 KB Created: 2020-11-18 02:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: f5060aa4d9caeee243b3014fa13e2ca2 SHA-1: e7b450fdeaf6eba83bf6f41795d12a87b7678257 SHA-256: 7a10ca70a11bf03f724f2552cc7c83332524f3c3b85d627ae02863f15bf6019d
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=adobe+photoshop+lightroom+3'. This URL is likely used to deliver a malicious payload or conduct phishing. The presence of a 'download button' heuristic further supports a lure-based attack. While no scripts were explicitly extracted, the PDF structure and the malicious link indicate a clear intent to redirect the user to a harmful destination.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=adobe+photoshop+lightroom+3 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390373/normal_5f98da998780d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392215/normal_5f9eadf0cdd71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380681/normal_5f93f36899add.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5fb4633553afc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424630/normal_5faa7930adb0e.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/ff29b383-c39a-4c9a-9d19-c2c27a8d06ce/bavifosuruzegoreg.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/autocar_india_magazine.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/40699402570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8f17638-013c-4f17-a6cb-26535978df72/the_tao_of_seneca_volume_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72be080c-d24c-412f-bad5-e87c272969db/kepid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b399ec86-88a4-4c46-ae06-339a2fff5221/73695863930.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/cfms_bihar_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba6d377-52d5-4fb5-b3b3-7b3d951a5ea0/wetexovibupotovamujuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c8fe340-7183-4338-a7c8-1c2ce6c2340f/nofip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/086c6d49-9af1-45c7-bc14-aa9b08ab670d/glow_worm_boiler_manual.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_off0000ce1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1C 5456 bytes
SHA-256: 29a5d634c0e0b448688bfb472853bd2052c163969aa80c6c6c726f342287bba7
font_01_sfnt_off0000e07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07E 10360 bytes
SHA-256: 0f1878b6f7f94b5e65219f836b14b93ec85359dd2fdfddb6922db5e883062208

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