PDF malware analysis — malicious · c35780bf9bcd4d70

MALICIOUS

PDF

65.4 KB Created: 2021-04-05 23:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5b0e643ea1b1d49b6c0854f2f1ca786a SHA-1: 93092ee25dc2d3e5fa48b3c279f74f5c10b11982 SHA-256: c35780bf9bcd4d707aaff01d77a1fa9d5cc621f3ca12bd63d17775ce90f3fc72

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, identified as a 'PDF_SEO_LINK_FARM', suggesting a tactic to distribute multiple malicious files. The presence of ClamAV detection and ML classification further supports its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a phishing or malware distribution attempt, likely leveraging a spearphishing attachment vector.

Machine Learning

Nyx PDF Classifier malicious score 0.7995

Heuristics 4

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
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://xajibur.ru/award?keyword=free+download+allah+names+pdf
- http://gramnews.xyz/mercruiser_service_manual_30ifngt.pdf
- http://mandarin-fruit.space/togogirokejozesezudasutskrwd.pdf
- https://zavoroxovedigij.weebly.com/uploads/1/3/1/3/131398250/buronuxinapok.pdf
- http://okstore.info/83648504281lanx9.pdf
- http://itdiscounts.pro/a_song_of_ice_and_fire_miniatures_buy9u0c4.pdf
- https://buwofapakudo.weebly.com/uploads/1/3/5/3/135316190/9588701.pdf
- http://fakts.design/gapudopemufupozupa5zgul.pdf
- http://kapusta.pro/71297412005iqqfv.pdf
- http://aromaita.space/lenovo_m82_sff_motherboardbdts9.pdf
- https://bobazuforabi.weebly.com/uploads/1/3/1/4/131452976/xutem.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/voxulija/florida_restricted_license_test_answers.pdf
- https://uploads.strikinglycdn.com/files/f2315bb3-3ae5-453c-bf0e-4876ec37f5e5/singer_tiny_tailor_tt600a.pdf
- https://uploads.strikinglycdn.com/files/042f2ca2-18d2-4a06-a05d-92bfea34bbc4/bookends_movie_2016_review.pdf
- https://uploads.strikinglycdn.com/files/2481bc59-691a-4c06-9733-02e1bd3b698b/diccionario_de_filosofa_herder_descargar.pdf
- https://s3.amazonaws.com/xapota/53448189080.pdf
- https://uploads.strikinglycdn.com/files/48708224-c04b-4af9-a06c-a732ae2e9c76/things_banned_in_massachusetts.pdf
- https://uploads.strikinglycdn.com/files/fd82830e-37ce-4296-8283-dd88f6f8b4fc/geleju.pdf
- https://uploads.strikinglycdn.com/files/701849dd-891d-48d4-835b-e5a07d1de4cd/jonugupobodunokanuboxifen.pdf
- https://uploads.strikinglycdn.com/files/c2061976-d9d0-4769-9d1a-df525f2ec3fe/54393000222.pdf
- https://s3.amazonaws.com/getizar/rebelion_en_la_granja_personajes_historicos.pdf
- https://s3.amazonaws.com/toguvaju/sogunidejuzamelilagimawi.pdf
- https://s3.amazonaws.com/nakevoja/adjournment_request_form_nj.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec4b.bin` `3a87e04d3aaec63156dad4487ab57b1331beb182a9b32d3739e5cbc15182199a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC4B	5328 bytes

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