PDF malware analysis — malicious · efd0df06f1f03573

MALICIOUS

PDF

89.1 KB Created: 2021-03-23 07:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30

MD5: ae92e1afb64f80a2f70ffe4c37d5ce8d SHA-1: 5e130cd917fbcdfc0616c264e0bec7368e78a6cd SHA-256: efd0df06f1f03573d0ab0e25f658bbd4a80f31f9ffcd2381d64ab3efa9c90127

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 URL pointing to a site that appears to be part of a link farm designed to host SEO-optimized PDFs. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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://seumenha.ru/wix?keyword=appositive+practice+worksheet+pdf PDF link annotation
- http://stat-index-co.com/the_open_window_commonlit_answers4qgel.pdfIn PDF document text
- http://zdsshop.top/dell_precision_m4700_laptop_release_dateg7jbn.pdfIn PDF document text
- http://zazujig.22web.org/natural_beauty_tips_in_tamil_app.pdfIn PDF document text
- http://study-english-04.space/wasenalituzofetivitugudqz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4483354/normal_601f05cf6a355.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481166/normal_5ff64a6be4b0d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367277/normal_6031ac27852b5.pdfIn PDF document text
- http://alcozerox.com/botivinus1yvdw.pdfIn PDF document text
- http://lojasamericanasbr.com/153134040300k4h5.pdfIn PDF document text
- http://lulizukudomiz.scienceontheweb.net/julemizuzuxebajuriju.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://2a984544-7cb8-4a4d-9f60-e686f7994e39.filesusr.com/ugd/1434d3_47d4140ef508405cb2beb51bcd089ab7.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kikunojulejuj/juboxopupusixilajefe.pdfIn PDF document text
- http://rapekagij.epizy.com/oil_painting_canvas_sizes.pdfIn PDF document text
- https://s3.amazonaws.com/desekusoxi/26206087718.pdfIn PDF document text
- https://s3.amazonaws.com/gofilafixu/kubupedijener.pdfIn PDF document text
- https://s3.amazonaws.com/geradi/adventure_movie_in_tamil.pdfIn PDF document text
- http://maretubozewugi.myartsonline.com/advanced_english_words.pdfIn PDF document text
- https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_9284890c902d49af986f6583197804d2.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/wolawatin/modevuriluxusemajiruxak.pdfIn PDF document text
- https://cb0920a4-0dfc-4587-8161-bd3bf883b043.filesusr.com/ugd/df391a_074b2176a8be4677a9d50dac0989fbda.pdf?index=trueIn PDF document text
- http://tovimemiluv.epizy.com/chronicle_of_a_death_foretold_chapter_3_summary.pdfIn PDF document text
- http://jezuboteseg.epizy.com/tewedikonulozalajeke.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f899.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF899	6588 bytes
SHA-256: `b3260a8b27c40a1c9408c40b3dcfb9ec9ded560232013cbc1ca8de37ebb5a831`
`font_01_sfnt_off00010913.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10913	5416 bytes
SHA-256: `f149e9f3191b17a8ab916d824d7ec11f319451c5705842e2feb7b268d8b7065a`
`font_02_sfnt_off00011b8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B8E	10636 bytes
SHA-256: `fd86c939664950ce1f5c0fa00d2520ff307c47a30e574d56ab78a19e2b7366c1`
`font_03_sfnt_off00014039.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14039	16384 bytes
SHA-256: `6ab929c546720aa0e0fb338b58eb3c867ebca76a146285035492d77f304c2074`

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