PDF malware analysis — malicious · 77d33a56b71ebaff

MALICIOUS

PDF

69.0 KB Created: 2021-03-30 13:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 51ac041556d20c4a3a966c0123ca5fd5 SHA-1: 1e78cac41cffeb4bf2bd000f2f2be1892dfb4198 SHA-256: 77d33a56b71ebaffa8344da1a9124f843069d84a639bc74d9869310c6ecc414f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a link farm, with one prominent URL pointing to a suspicious domain. ClamAV also detected this file as a phishing trojan. The presence of numerous external links suggests an attempt to redirect users to potentially malicious content or to manipulate search engine results.

Machine Learning

Nyx PDF Classifier malicious score 0.7003

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://crophysi.ru/strik?utm_term=what+happened+to+percy+jackson+in+the+son+of+neptune
- http://load-bcp.com/sony_vaio_operating_system_not_found_after_bios_updateamf01.pdf
- http://4338bacchus.com/abcd_movie_all_song_320kbps6jjhe.pdf
- http://thefortykuti.com/jadeposotukeritirm68p2.pdf
- https://voxivunesiru.weebly.com/uploads/1/3/1/4/131407918/xijupoda-satozo-mejakuv.pdf
- https://cdn.sqhk.co/dijogiper/mrAiciL/53756667777.pdf
- https://cdn.sqhk.co/wakunexigoto/RmExjfK/billy_joel_my_life_sheet_music.pdf
- https://cdn-cms.f-static.net/uploads/4451376/normal_60341691f2628.pdf
- http://mnatural.space/ball_mayhem_unblocked_games_76dw1ai.pdf
- https://gitapizi.weebly.com/uploads/1/3/2/6/132683136/zupug.pdf
- https://dazutexigamufo.weebly.com/uploads/1/3/2/7/132740900/3451206.pdf
- https://cdn-cms.f-static.net/uploads/4453335/normal_60150eb0bc90f.pdf
- https://cdn-cms.f-static.net/uploads/4373502/normal_6049b8babf2ae.pdf
- http://misstourist.info/32560635887kmmg5.pdf
- https://cdn-cms.f-static.net/uploads/4494891/normal_60108e1d722b7.pdf
- https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/20902d900ed9e0.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/timeziso/fejuko.pdf
- https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_c3ae063e96ff4ea4b009a03a07ca3fac.pdf?index=true
- https://s3.amazonaws.com/dekogamik/fosroc_expandafoam_sheets.pdf
- https://s3.amazonaws.com/gimisorixosu/navy_test_pilot_school_aircraft.pdf
- https://s3.amazonaws.com/litunux/munizaziba.pdf
- https://c8019651-2137-4367-b38e-775fff3f8a75.filesusr.com/ugd/fc5a02_c4281634d38a409bb78938fd45721caa.pdf?index=true
- https://74a5c9af-61bb-4d76-9351-4d02c0bf652a.filesusr.com/ugd/e33828_1507835fa6c04bf5977078a7f921f4a7.pdf?index=true
- https://s3.amazonaws.com/lanaladu/boy_girl_clipart.pdf
- https://9849c7ec-8b19-4b81-9a64-db2537ea7c40.filesusr.com/ugd/97b1c0_d0826e0b40f24a269d3302a889e0a98d.pdf?index=true
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e981.bin` `70f8c191e9a61d229e7a6c4af7e834735bf6bbf4c99d5a8044d0865e30b53cf1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE981	5464 bytes

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