Malicious PDF — malware analysis report

Static analysis result for SHA-256 95760b5dc4b8adc8…

MALICIOUS

PDF

93.1 KB Created: 2021-03-20 22:14:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 43f6bec09bcfecfea0d9cb1d61abe10c SHA-1: f1425b9d6f8e9527aad0bbb59ad01971da9e4626 SHA-256: 95760b5dc4b8adc861b36921db44623451e15d75091fcf0a60c15ab271077ec3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and other extracted URLs suggest a phishing or social engineering lure, likely attempting to trick users into downloading further malware by posing as a game strategy guide. No scripts were extracted, but the PDF structure and embedded URIs are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/aws?utm_term=skyrim+legendary+edition+strategy+guide+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4477137/normal_5fed59af1ba25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_603eacb786264.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/suzuki_quadrunner_250_service_manual_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365598/normal_5fdfa00fb5edb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453906/normal_5fe06a116dd0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369671/normal_5ff56517100df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486037/normal_5febf0be07198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_602a87d09dcdf.pdfIn PDF document text
    • http://mibemuxagegija.mywebcommunity.org/what_should_a_personal_statement_for_university_include.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457330/normal_5fee663e5ac6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_5fe6fb2e1883f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407807/normal_600c199e3ea1c.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/zuzadevibep.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.net/vokixodi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371790/normal_6002d297cd082.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/2017_lexus_gx_460_for_sale_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452863/normal_5fe5abfe57650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_600af2f3d0d80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502563/normal_5fd3350e42aba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5fe824bda20f2.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://uploads.strikinglycdn.com/files/d2bdc4ec-a0eb-4e6c-abbf-5f77733bfa7b/fugogip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9da1196-3444-4d01-9dd9-1c66003ae10e/66932912428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d375067-bb7b-4e63-8d20-ff3ddb4d9383/is_an_air_fryer_the_same_as_a_convection_toaster_oven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7d2408-4149-4992-982b-eee87a5b7d90/how_to_recover_my_old_fb_password.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_off0001212b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1212B 5512 bytes
SHA-256: ed44a899c06058ef126c0ad8d7ef86616f39d699e572052c0d6e9a04ecc6d06d
font_01_sfnt_off000133d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133D5 10620 bytes
SHA-256: ce1b5a8e2bbfe6cb64d747374dcf90dc08a86219f386ae82144aef1c85e460bf
font_02_sfnt_off00015825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15825 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361