Malicious PDF — malware analysis report

Static analysis result for SHA-256 e341a6befff32c0e…

MALICIOUS

PDF

81.8 KB Created: 2020-11-19 06:13:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 68d85741f810db6207b92659b06c0d16 SHA-1: d589ef64f70e36676883f21ab641c298a59d884d SHA-256: e341a6befff32c0e55ab8cf349a6247e7c898211ecfccb056df4b8a9ee4a0e8b
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links directs to a known malicious redirector, and another points to a PDF hosted on a Weebly subdomain, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=pennzoil+ultra+platinum+0w-20+specs In PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/mevubime.pdfIn PDF document text
    • https://bedakowunuva.weebly.com/uploads/1/3/4/3/134342711/e33bfef3d49e21e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389085/normal_5f9a4e6e2a08b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403418/normal_5faafc737b930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415951/normal_5f9d037c9b1a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464302/normal_5fa23ac0d951d.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/f26382ce38bd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417827/normal_5fa8052004bf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453908/normal_5fa4a07c31501.pdfIn PDF document text
    • https://vukumurumijolot.weebly.com/uploads/1/3/4/4/134433046/mogupipexu-wikitupiwakopap-rupes-delobusav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410702/normal_5fa5989135d50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410986/normal_5fb47be7d390b.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/6265756.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/555ab0c6-9cfd-4a4e-8b98-05a65f7d6b35/murir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f72f58-a0c3-4ce8-a1a5-2e47c99d9319/gowifamananojusoliwenole.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000debd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBD 10812 bytes
SHA-256: 19b01cfde661d36e729663e934cf2502b73a10b417e2b08923ee7a09a2747353
font_01_sfnt_off00010243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10243 5528 bytes
SHA-256: b6c080e12845ac94ac6e7a05ddd9be82b989de304ae0313a355028267d2f9872
font_02_sfnt_off00011516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11516 10864 bytes
SHA-256: 9ffade7263fd88aa5cfc6dd24eeb8d25e99bdd5850cb6c1ae1832998fac455b1

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