Malicious PDF — malware analysis report

Static analysis result for SHA-256 e594aa7dd04ed2b6…

MALICIOUS

PDF

104.7 KB Created: 2021-04-11 06:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a858d1e0a0f1e8911ac7b02c021653fa SHA-1: b0f4867e901b37e41eaa2fe3edfbbb8eb5e232a5 SHA-256: e594aa7dd04ed2b6eb937a2c8828ec901f5eb6ead19b4aed356617247f85dc55
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to song lyrics, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://midufefew.ru/strik?utm_term=cant+stop+wont+stop+lyrics+twice
    • http://prodit.space/gazetted_officer_certificate_for_aadhar_cardd31fe.pdf
    • http://btsworld.org/computer_system_validation_engineer_interview_questionslbexp.pdf
    • https://jesokawafaz.weebly.com/uploads/1/3/4/6/134626724/dedekedigipirene.pdf
    • http://qwert-ita.fun/xipibalonosijkyig.pdf
    • https://kamidosebesu.weebly.com/uploads/1/3/4/5/134593467/lololusuxeko-sefudamimupiguk-mutasukopufi.pdf
    • http://tokio-2020.fun/55358297035a1zsw.pdf
    • https://dunilugifesa.weebly.com/uploads/1/3/4/4/134471262/e14cec565cc9.pdf
    • http://gexafozo.22web.org/tcp_ip_meaning_and_function.pdf
    • https://dowamiwimeguv.weebly.com/uploads/1/3/0/7/130775936/jagagatawam_xusonum_dikonukejijux_mizog.pdf
    • http://fruitik.space/abu_garcia_black_max_spinning_reel_line_capacityeusut.pdf
    • http://yozi.store/fiddler_on_the_roof_full_movie_watch_onlinezp5su.pdf
    • http://bridgecommerce.com/23306487232n1o1c.pdf
    • https://ratofesut.weebly.com/uploads/1/3/5/3/135304008/255147.pdf
    • http://helpcenter.business/josh_groban_granted_piano_sheet_musi65rp3.pdf
    • http://tryse.xyz/starcraft_1_cheats_codes3zcin.pdf
    • http://dubotivuga.22web.org/8080059733.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kokofotalixik.epizy.com/62939243812.pdf
    • http://jezanijumoz.epizy.com/50021036491.pdf
    • http://ketugida.rf.gd/gangstar_java_game.pdf
    • http://wepatimaleb.epizy.com/8905194099.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe5d.bin
476503dae56ac4024dbdfd710ed889a4f7b9c3cb47c0f70837177d2c728f29bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5D 19624 bytes
font_01_sfnt_off00013879.bin
35375447986898b477169e65afb74221a86f8bd1ae780d0ef2ac0d6d620ed4fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13879 4932 bytes
font_02_sfnt_off00014962.bin
b64f7bc23613f0fc482cfa9e039b41d8c27f971f28a549fd2e1fd13c9decd2b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14962 11296 bytes
font_03_sfnt_off0001700c.bin
4cd3ade1da064af942d0fdb029f650a82ab26a57a88cd100d73b7ab7c817d558		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1700C 16060 bytes
font_04_sfnt_off000184a6.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x184A6 4324 bytes

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