Malicious PDF — malware analysis report

Static analysis result for SHA-256 419e13fa02a8749a…

MALICIOUS

PDF

73.5 KB Created: 2021-06-13 11:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7d0aecd44743690a1d12c67aaaa489cc SHA-1: 0398e9085d7c2e5cb6412aaaf98074269f03b7ea SHA-256: 419e13fa02a8749a965f7c11d8d43034b478ebaeba4f1961beb65b975f3ea14b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent link pointing to 'allytemp.ru' and a deceptive title related to a popular movie. This suggests a phishing or malware distribution attempt. The presence of PDF-specific heuristics like 'PDF_SEO_LINK_FARM' and 'PDF_URI' further supports this, indicating the document is designed to host or link to malicious content. No scripts were extracted, but the overall structure and URL suggest a social engineering attack.

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://allytemp.ru/pbw?utm_term=harry+potter+and+the+chamber+of+secrets+full+movie+english PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426823/normal_5fd1fb14dfeea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392647/normal_60030e297b361.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490953/normal_60166166e6677.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4487927/normal_60b09553e6c1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387826/normal_6005f1fa8a76a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405194/normal_5fe099618174c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373520/normal_5fc5a4ccd8fe7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387815/normal_606d4b12c9132.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380380/normal_5ff9cff152e49.pdfIn PDF document text
    • https://betutinixe.weebly.com/uploads/1/3/4/4/134481053/xuzatowibobosi_lexuzasegizo_zapabejun.pdfIn PDF document text
    • https://fazatirogefo.weebly.com/uploads/1/3/4/4/134462354/9311702.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_601415e946afa.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4469863/normal_60b1d930a5443.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_6061b436f0240.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4411926/normal_60b4e34aa04c3.pdfIn PDF document text
    • https://tazififodokufu.weebly.com/uploads/1/3/0/7/130776891/422752.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/2036dc4a-c381-4920-a623-74d69a47726a/how_to_make_a_wind_turbine_model_for_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f621905-8c8d-4dac-a785-32249c81cfa7/who_wrote_the_treaty_of_hudaibiya.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70994015-e29a-4434-abf3-50807856e0e9/puwisales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8977f71e-a822-4a5b-bd72-7a4aab2665bf/32072212463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd7c1a8e-5135-4646-9f62-7530bdad7407/how_to_determine_fracture.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_off0000de73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE73 5832 bytes
SHA-256: 56f31363a5d976b6ea7a1a00d5ef9862e6bc776f8b07c02796d2cd3ccc8e4026
font_01_sfnt_off0000f22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 11236 bytes
SHA-256: 8354a4ae3ff2de6af186a6f98f14cfa2990cb9c96e96429f61d7782abf344d54

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