PDF static analysis report

Static analysis result for SHA-256 b3150b72e422be90…

SUSPICIOUS

PDF

59.9 KB Created: 2020-12-17 20:47:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9815b55b57e6a60baff5a42ed602e0e1 SHA-1: e9209c10496b4c97d3bd50427ba3bbdff3c73d4b SHA-256: b3150b72e422be905f81b9cf0df71fe676efb7fce7170cb112b8503b11a9042a
44 Risk Score

Malware Insights

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

The PDF document contains a heuristic indicating an external URI, specifically 'https://trafffe.ru/123?utm_term=present+simple+affirmative+sentences+exercises', which is suspicious. Additionally, a low-severity heuristic detected a visual download button lure. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a suspicious URL and a download lure suggests an attempt to trick the user into downloading a malicious payload, likely via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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
  • 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://trafffe.ru/123?utm_term=present+simple+affirmative+sentences+exercises PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393521/normal_5fc763b1de3e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453532/normal_5fc63b26a767f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468536/normal_5fd66f7c65f97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f87fcbf54e0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8758fb576fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466408/normal_5fc9ce1cc266f.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/9e1f8ccd-84b4-4a75-80f7-16744aafca28/jidekepivodovekoni.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc599cf5e8e827d42add72c/t/5fd037abef76c20f2d415cb8/1607481260078/air_strike_force_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7819a844-4f7b-4f19-a83b-2196ceeb9e64/xugenuxiludotowibawiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b423ebb-67fd-4ee9-8e83-c1e3ba08fd96/zejasarazepudopuder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d5d53c0-7ff3-4018-894b-ac0aa67283cf/94421088310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa643614-9e93-402a-90d5-45f2ff182f11/10143491048.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/14136199501.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f24c403f5353fd95fd42/t/5fc2b1bb9ee0f32b87ab92a3/1606595005242/wealth_by_slaiman_kate_age.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000af43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF43 5292 bytes
SHA-256: 0f5af9766caeec6ce534740635d6c45e4d4fdd2f5ff9db448935ed0603a6c7c2
font_01_sfnt_off0000c130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC130 9800 bytes
SHA-256: b1ae144525672b16c0e3b48d3834b11be49611b8095390ba342ed47dc29c8a20

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