PDF malware analysis — malicious · f424a8daeec0f530

MALICIOUS

PDF

75.9 KB Created: 2021-03-25 18:13:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 914d9ac5942b2e7a0f0012469840fa5a SHA-1: 493acca02fb182975477c41a1c24a54da63948aa SHA-256: f424a8daeec0f5306402fddd0ad08e85bd71df1d99a737842cee583d2b900825

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it is a phishing document and hosts a link farm. The embedded URL 'https://ponafet.ru/award?keyword=car+mileage+tracker+pdf' suggests a lure to a malicious site. ClamAV detection further confirms its malicious nature, classifying it as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the presence of external links and the phishing classification point to a likely spearphishing attachment attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

Heuristics 5

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.
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://ponafet.ru/award?keyword=car+mileage+tracker+pdf
- https://static.s123-cdn-static.com/uploads/4407314/normal_5fccfb4beee9c.pdf
- http://xolidila.iblogger.org/14478072454.pdf
- https://static.s123-cdn-static.com/uploads/4413696/normal_5feb4f7b6796f.pdf
- https://jatisarekitikez.weebly.com/uploads/1/3/4/6/134661612/xuwederib.pdf
- https://cdn-cms.f-static.net/uploads/4369911/normal_602d657154f6d.pdf
- https://gegefajowib.weebly.com/uploads/1/3/1/3/131380265/5192482.pdf
- https://gawofatofuwe.weebly.com/uploads/1/3/1/3/131380275/8478952.pdf
- https://nigoriwidoke.weebly.com/uploads/1/3/5/2/135296580/4481947.pdf
- https://zogudoweno.weebly.com/uploads/1/3/1/6/131637773/4f92357321b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/zupenafud/fivetufutudusovopuzukuv.pdf
- https://s3.amazonaws.com/purawuma/is-_453_test_answers.pdf
- https://uploads.strikinglycdn.com/files/860ba3c4-e44a-4421-8d03-f9893d983217/24349191316.pdf
- https://s3.amazonaws.com/jowutoneranemuk/amu_bums_admission_form.pdf
- https://s3.amazonaws.com/nedijowewoded/oven_sheet_pan_size.pdf
- https://s3.amazonaws.com/mukutud/gndu_2019_date_sheet.pdf
- https://uploads.strikinglycdn.com/files/000e6d75-159a-40a6-811b-b1fe68092a04/hp_deskjet_2620_wireless_driver.pdf
- https://s3.amazonaws.com/rekorewexidiwo/30364379333.pdf
- http://keximidurowu.rf.gd/jacplus_psychology_answers.pdf
- https://s3.amazonaws.com/kavalukato/learn_hindi_in_30_days_through_tamil_free_download.pdf
- http://toxukofotu.rf.gd/asma_gpc_rapida.pdf
- https://s3.amazonaws.com/rubidokezive/flight_simulator_x_addons_free.pdf
- https://s3.amazonaws.com/panalipolifod/anchors_aweigh_trumpet_sheet_music.pdf
- https://uploads.strikinglycdn.com/files/6bd30b27-fb76-4f10-a9e5-735562bda421/moto_g_6_user_guide.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eb13.bin` `319ce333e18a72a3e3d1af2f64179533e3a3b5a799062bbc722ae3fff9ddcba9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB13	5264 bytes
`font_01_sfnt_off0000fce5.bin` `d4f5b6987b7d171fc42bda0fe3ddb0eee0e9af6db8a514c292e5034c62ab93c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCE5	10980 bytes

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