PDF malware analysis — malicious · 990a7c0036c16218

MALICIOUS

PDF

80.8 KB Created: 2021-03-27 17:46:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 374007401c309da50f74cd8035944ad9 SHA-1: a367bea1d2463b284a978473701a7cdf29b6369d SHA-256: 990a7c0036c16218887d495a01528251897b3c132b0aa7ff43ac1b2ff77c3b9f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs to a domain associated with job application lures, suggesting a phishing attack. While no scripts were explicitly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://maypoin.ru/award?keyword=carl+s+jr+job+application+pdf PDF link annotation
- http://formverifiedbadge.com/lijupofudonixf9n5o.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4502870/normal_5fea393ae974a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408464/normal_6019c6e608a42.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448346/normal_60141eceee242.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485149/normal_5ff1463834366.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4373271/normal_5fc9b1d800dd2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476436/normal_6045f6f180ef0.pdfIn PDF document text
- http://persequen.com/pefuminupurajobakufosibmy7k.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472774/normal_5fda409898f7c.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/1f133e40-feb4-4902-b788-7aae1ec935e9/show_me_a_picture_of_the_ugliest_animal_in_the_world.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fe97a6a2-5775-4e05-ac31-ce02da963a18/87962758234.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f355fe39-c569-40e0-98b5-a8920cd2ac43/15034546707.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/07710ead-ef81-4902-9bea-6a74eca3d46a/different_types_of_errors_in_measurement.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/99113650-84e0-4d29-bea6-9b0006b15de6/rumi_poems_about_hope.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d7e48a40-f326-451a-83d4-1530586b42dc/how_to_use_cuisinart_2_qt_ice_cream_maker.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c1e90848-8591-47f4-8c71-2d03af7a7c40/menoken.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5e12bd92-47d4-4882-a4ee-9f3d0dd3acad/prefixes_and_suffixes_examples_worksheets.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/980e6f1e-60a6-49f0-8181-0872dca451ac/96323516688.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b213915c-4aa0-4f03-bda1-b09f75abd59f/29852945301.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0c2c8da-40b7-48bd-bd8f-d0ef8d52b1d9/definicion_de_enfermedad_por_autores.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4b5fe0ce-13bf-40c4-828b-b4ae896f99d3/66013449049.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/20e8a773-3cb3-4e4b-86bb-2553b4f5399f/gusikegepetazirako.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/03887093-a4a0-451b-b1ce-037d8cacef5a/mutants_and_masterminds_character_sheet_example.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/026687a9-a0ce-4907-9615-e8a34ed8e888/henri_lefebvre_the_production_of_space_review.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f0ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0BA	5056 bytes
SHA-256: `fc085c6e8697f8446d1711c42b12f8a52afdc8eea8995a215577ff8f22711c4a`
`font_01_sfnt_off000101ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101ED	11112 bytes
SHA-256: `a20205e6804b5f4c8aa104eca3b5b9ae04b1f82bf4d282ed54a3863ad156cc90`
`font_02_sfnt_off000127c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x127C9	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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