Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b5d3a1e0f5f4e0…

MALICIOUS

PDF

79.4 KB Created: 2021-03-15 22:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 60890fe5b8cab30dcc419c57e12cd98a SHA-1: 7507fe362db482a5cf13576a2c17c850bcdfa733 SHA-256: d7b5d3a1e0f5f4e0b58718c1ca9eb7a6ee46cfacdf584289a8bd113b26723f56
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://vilenefex.ru/wix?keyword=groton+ma+catholic+church', suggests a lure to a website that may be used for phishing or distributing further malicious content. The ClamAV detection and ML classifier further support its malicious nature, indicating a phishing or trojan payload.

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
  • 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://vilenefex.ru/wix?keyword=groton+ma+catholic+church PDF link annotation
    • https://cdn.sqhk.co/venitalobeni/SYhbhiC/83828686547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450516/normal_6031fe43ac0e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457843/normal_600c4f2b1f204.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaku/ggcdrij/ups_goleta_address.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nowokil/majebepitururikup.pdfIn PDF document text
    • https://91c7bc9f-df77-4dbd-ae51-8bcf521f3e61.filesusr.com/ugd/1df9ea_aff2521701c04f819abc6ce3c82c38fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/dream_interpretation_dead_mother_angry.pdfIn PDF document text
    • https://62abf401-5fc9-4991-ac00-cb6a0c8cf8ec.filesusr.com/ugd/e4ff69_0a45fa04a33946c99f867984aa991fcb.pdf?index=trueIn PDF document text
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_dd1275fbdbb442a480a7b767542361ff.pdf?index=trueIn PDF document text
    • https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_3c460e11b663413c9c11007dd095e588.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/timeziso/greek_gods_movies.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/can_you_use_pack_and_play_as_a_bassinet.pdfIn PDF document text
    • https://c38d9960-f3a4-46a0-b266-cfc7836dd0ed.filesusr.com/ugd/a8d9c8_15c0554b3a8f42e6b632e50a838c8b3c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/16863789707.pdfIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_fdb5213e62f04ee5842d4f259abded19.pdf?index=trueIn PDF document text
    • https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_bc16caa323e643b3ad76887b61b8e1a4.pdf?index=trueIn PDF document text
    • https://f6b99bba-f064-431f-ab68-6eacb91b2703.filesusr.com/ugd/35e1ce_fd5277f55bfe4e41a34e6e2d7d77fed9.pdf?index=trueIn 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_off0000ed36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED36 4656 bytes
SHA-256: 6f29cf73e0e103216668ec436335f0153a35d33b1957c5f8d8113b918b3b68e5
font_01_sfnt_off0000fcc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC0 11308 bytes
SHA-256: c9b1a8c37a9b4ef5cdec2e3fd9649bf8192fcc8ed2bb7352e26f2859f0422a2e
font_02_sfnt_off000122c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C4 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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