PDF malware analysis — malicious · c016b1794d849e4a

MALICIOUS

PDF

68.1 KB Created: 2021-03-27 17:26:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9ee00626b25c9964e923c7de87147ea3 SHA-1: e74dd90258c06b1ce735fdd82761d34b0368a06b SHA-256: c016b1794d849e4a273b9030f7f9dd21e86dca1a553112fee65ee4b903df074d

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. It contains numerous external links, including one to 'dafemum.ru', suggesting an attempt to redirect users to malicious content or phishing sites. The presence of embedded URLs and the PDF structure indicate it's designed to facilitate the distribution of other malicious files.

Machine Learning

Nyx PDF Classifier malicious score 0.6022

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-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
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://dafemum.ru/award?keyword=baixar+livro+amor+de+capitu+pdf
- https://rizafosukozesal.weebly.com/uploads/1/3/5/3/135346652/f4a57654714f.pdf
- https://static.s123-cdn-static.com/uploads/4449965/normal_60004361ed0a3.pdf
- https://cdn-cms.f-static.net/uploads/4468268/normal_5fe81a6eede1e.pdf
- https://bubunixijasebed.weebly.com/uploads/1/3/1/4/131407035/7154812.pdf
- https://static.s123-cdn-static.com/uploads/4467017/normal_5fec968e9832c.pdf
- https://cdn-cms.f-static.net/uploads/4448332/normal_6056dd3be63cc.pdf
- https://static.s123-cdn-static.com/uploads/4456660/normal_60006d4e6c2e0.pdf
- https://sujanumijixedi.weebly.com/uploads/1/3/4/5/134501714/melobirotolorok_sadujepoju.pdf
- http://gililofus.medianewsonline.com/sivojevababogika.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/a081d920-56ac-4db4-a8e9-55f4ee879261/coloring_learn_mod_apk.pdf
- https://uploads.strikinglycdn.com/files/50dd8092-cc2c-4a87-9b22-0047c5464a58/bodewubudimi.pdf
- https://uploads.strikinglycdn.com/files/c9313a56-8a70-4611-afb0-214707f1b88b/line_6_spider_iii_30_watt_review.pdf
- https://uploads.strikinglycdn.com/files/ceb18bd8-66cd-4a90-bc37-f96708a7dda5/what_is_a_relation_in_a_graph.pdf
- https://s3.amazonaws.com/bupijila/2017_bmw_x4_m40i_performance_parts.pdf
- https://uploads.strikinglycdn.com/files/b1f3b721-a9c1-4d36-a0f0-64f1e912e033/why_does_daphnia_heart_rate_increase_with_caffeine.pdf
- http://megigezorozo.atwebpages.com/free_wordpress_website_builder_software.pdf
- https://uploads.strikinglycdn.com/files/bdc43dda-59e8-4ef6-934b-4b065c0acf7c/rcbs_chargemaster_lite_vs_1500.pdf
- https://uploads.strikinglycdn.com/files/b30d0208-5f6e-490f-97fd-4dd4ab651ae2/secret_of_the_ages_book_review.pdf
- https://s3.amazonaws.com/bezorito/forouzan_data_communications_and_networking_5th_edition_ppt.pdf
- https://s3.amazonaws.com/mexavofezoxi/zuwudifofiligefo.pdf
- https://uploads.strikinglycdn.com/files/538807b4-5712-4c2a-befc-ba0fdcfd6162/pusawetibunaxafufuken.pdf
- https://uploads.strikinglycdn.com/files/ae7ba02f-a34a-4920-a15b-b32702bacbda/81396871868.pdf
- https://uploads.strikinglycdn.com/files/58409de9-b058-48b8-83b0-9007ec239672/the_house_on_mango_street_movie.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ddba.bin` `b3dfb2f2c41da7350fc3755141d2fd0ea5796bb125df25fec831093623ff73df`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDBA	2900 bytes
`font_01_sfnt_off0000e7fd.bin` `9bdb69f8469f84db95041bb10daa092316530c97b825020dd676f30d79802ef8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7FD	5300 bytes

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