Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e7f3d695aa28b1…

MALICIOUS

PDF

82.5 KB Created: 2021-03-19 11:12:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7df7e8d2ed00dc2b7003638394accddb SHA-1: b6dfbff6de54f069c44bc761fa1154f015373bc3 SHA-256: b1e7f3d695aa28b1754ca1fa799dfca34e6ca48b14d8868f67e77003b63c2182
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document exhibits social engineering tactics, specifically a 'ClickFix' attack, by instructing the user to copy and paste content into a command-line interface. This action is a common lure to bypass security restrictions and execute malicious commands, likely to download and run a second-stage payload. The presence of numerous external links, some pointing to potentially malicious domains, further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://leonvi.ru/wix?keyword=change+windows+password+command+line
    • http://semowatuk.iblogger.org/jogos_para_ppsspp_gold.pdf
    • http://vawadofofasip.getenjoyment.net/jakirefekelegugegelu.pdf
    • http://zumewidife.mygamesonline.org/toshiba_satellite_l750_drivers_windows_7_32_bit.pdf
    • https://cdn-cms.f-static.net/uploads/4489983/normal_60510e3c9e05d.pdf
    • https://dubobovutorikug.weebly.com/uploads/1/3/5/3/135332124/7609996.pdf
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/jipoxubibapodota.pdf
    • https://cdn-cms.f-static.net/uploads/4380531/normal_600deb0006c36.pdf
    • https://static.s123-cdn-static.com/uploads/4405440/normal_60083e889a44c.pdf
    • https://static.s123-cdn-static.com/uploads/4450243/normal_5fddcc690e33b.pdf
    • https://jawoxufogor.weebly.com/uploads/1/3/6/0/136022219/401ae1ff.pdf
    • https://static.s123-cdn-static.com/uploads/4421764/normal_5fc96ae508a28.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://9042e326-c85f-44e6-b9b6-0c206471fdba.filesusr.com/ugd/0d2fda_323ef39063dd46418629da43205c8d12.pdf?index=true
    • http://gixarewujedel.atwebpages.com/panasonic_kx-tem824_advanced_hybrid_system.pdf
    • https://uploads.strikinglycdn.com/files/ca2c03c8-63e0-4197-9522-c165a1ae70af/ripubevefotowes.pdf
    • https://a8fdb364-3865-4521-a36b-e12f4de7752f.filesusr.com/ugd/e20637_d1304da695c04039896de6947d6d7336.pdf?index=true
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_411f128e8c7d477181a3b3a68512a1de.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6e4dfa7c-f17f-40e3-b1d1-e33fcb3275f2/cdigo_ascii_palomita_excel.pdf
    • https://b81e1767-bb0d-4562-9f98-cfef66859bb1.filesusr.com/ugd/b48b60_1b7f19e3e45b410da038af650fed71b8.pdf?index=true
    • http://tebuwawezizafes.onlinewebshop.net/fl_studio_tutorial_software_download.pdf
    • https://uploads.strikinglycdn.com/files/ff5637d5-4e9d-4af0-8fc7-150cd592ecd1/how_to_fix_my_maytag_refrigerator_ice_maker.pdf
    • http://nolexaguluzu.epizy.com/roblox_game_free.pdf
    • https://uploads.strikinglycdn.com/files/8e77359f-b288-4a87-8936-cbfac8caf66b/chick_fil_a_first_100_prize.pdf
    • https://uploads.strikinglycdn.com/files/aa88f82c-cf58-4d79-a88e-81be87b1e81a/how_to_correct_english_grammar_online.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f811.bin
40f681f2b039fd286aedc2059069eeab6bdbf6f8bedf0cda0770066074925779		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF811 5312 bytes
font_01_sfnt_off000109f6.bin
e5c62b8dc2aaa85ba286ee8df3f55f57b9d91c95d88ce73e233d078c039bb52e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109F6 10628 bytes
font_02_sfnt_off00012e18.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E18 4324 bytes

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