Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f02cf9bf6816cc…

MALICIOUS

PDF

122.2 KB Created: 2021-03-01 11:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b22ce3b377dcf2aba86d1ea017769d7 SHA-1: 27981c1039be1b14b80d3244b60b133fb11a243c SHA-256: c7f02cf9bf6816cc7c3c997ff20a14a6edd7d609fdd6a474ab85b6874fe1b204
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a technical query, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9640

Heuristics 4

  • 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
  • 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://lozipotod.ru/123?utm_term=how+big+is+a+32+bit+integer
    • https://cdn.sqhk.co/nixagigad/Yf1Ozgc/nowalofuxonisupenume.pdf
    • http://patajafurep.mywebcommunity.org/can_you_use_a_forehead_thermometer_on_a_baby.pdf
    • http://xifadezuzurap.medianewsonline.com/how_to_draw_manga_for_beginners_with_angieartmanga.pdf
    • http://xitodefigatefuj.medianewsonline.com/how_to_fasten_wood_without_nails.pdf
    • https://cdn.sqhk.co/dusujukakal/Ebicigg/learn_javascript_the_hard_way.pdf
    • http://xuxetosufuzo.getenjoyment.net/how_to_use_treadmill_without_ifit.pdf
    • http://siwivelijutore.medianewsonline.com/louisville_slugger_black_flame_pitching_machine_video.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
    • http://smc.org.inhttp://smc.org.in
    • http://www.opentle.org
    • https://s3.amazonaws.com/xalasawu/deoxys_normal_forme_raid_guide.pdf
    • http://pusapovewazigu.onlinewebshop.net/how_to_fit_an_integrated_headset.pdf
    • http://nejimafalun.onlinewebshop.net/how_do_you_charge_a_ego_t_vape_pen.pdf
    • http://vawolanuxoreg.epizy.com/95471762193.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular
    • https://gitlab.com/smc/meera/blob/master/COPYING
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHong
    • http://www.geocities.com/dnhhng
    • http://www.gnu.org/licenses/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 12

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011af2.bin
0e21f1561e6fd05b057627d60db69432e4e2e11e3569f018deda8c1ad265a3e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF2 6944 bytes
font_01_sfnt_off00012c36.bin
8dc22e169b19046ad4c00353d48927bf7f617409eb423ba49bb609bde00d9990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C36 3440 bytes
font_02_sfnt_off00013887.bin
c1c070a46e6c7bc390a28f65e577371aaa7ac266b1d992aaf7f1b9902e19a7d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13887 5312 bytes
font_03_sfnt_off00014ab8.bin
a38695fe50f49a181ebe6a268040f1a5d6813482ede4d66ac55372f1be80d056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AB8 2136 bytes
font_04_sfnt_off00015421.bin
c7c8304a22711b4396d584ca93b09a029763e39a1875c34be0ed5a1a474f379e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15421 3816 bytes
font_05_sfnt_off00015fee.bin
e54f575bea2af4637f816cfb1d5d736a11d65dd2f22f7df1327115ef8d763a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15FEE 2316 bytes
font_06_sfnt_off0001692a.bin
be6e31bba30e02db5da7a1eec3d26666f64e2f49b8238202b2dcaac8334a9f75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1692A 4016 bytes
font_07_sfnt_off0001753f.bin
a8d8ddff7cefa063273f9ca9b85b6c3adbe6cd36876168bc040ac1772ee2a0a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1753F 1472 bytes
font_08_sfnt_off00017d42.bin
a49bd1939e0a34d4a459f45468bc55752325fe4087b55c1b1ab666402e900fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17D42 5852 bytes
font_09_sfnt_off00018bf2.bin
6f383f78c668bf9f0c31eacdf5f68f33336f0d7ced259afc36c3f445aadbc992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18BF2 1576 bytes
font_10_sfnt_off000193f7.bin
23fa48f94961567e7714fd774c364a90af96c6edbfb559792aac715c2cca7bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x193F7 13412 bytes
font_11_sfnt_off0001c164.bin
30f423ff53949975465531182b498c1e01066a59c7e4b16ba6de9e1fd145524b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C164 16472 bytes

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