Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d2b9e3370a0746…

MALICIOUS

PDF

66.4 KB Created: 2021-03-14 15:57:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d1dbb6b9ea2353a414d4a6cb8a397e8 SHA-1: 25dcc965325cf897c3ccf99b63ad089e90049813 SHA-256: d6d2b9e3370a074633062207c776421ea3c53b314ba3f82f0f1cf460f22e8771
76 Risk Score

Malware Insights

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

The ML classifier strongly indicated maliciousness, and the document contains multiple embedded URLs, one of which is associated with a tadacip advertisement. The presence of 'LOLBin token sequence' suggests an attempt to disguise malicious commands or URLs within the document text. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://jumiwimov.ru/wix?keyword=tadacip+20+mg+online+india
    • http://xobapadu.iblogger.org/batman_a_death_in_the_family_movie_wiki.pdf
    • https://cdn.sqhk.co/fuwufupi/BJyoIji/orange_tree_leaves_turning_yellow_and_curling.pdf
    • http://zifijovimijita.iblogger.org/who_makes_bolens_riding_mowers.pdf
    • http://davilebut.66ghz.com/ziggurat_game_free.pdf
    • http://gloslides.com/what_battery_does_suunto_core_takexdgy8.pdf
    • https://cdn.sqhk.co/jomutepe/FkdFtjh/zapuzuruga.pdf
    • http://trackcreditscore.info/opposite_of_isolation_word_wordhippo8zhh0.pdf
    • http://idealsit.fun/farorozunulupexufac0tm9.pdf
    • https://cdn.sqhk.co/xubipoxeguza/ihgcijD/midipixonux.pdf
    • https://cdn.sqhk.co/nomitusibop/ieovhhh/stick_combat_multiplayer_stickman_battle_shooter_mod.pdf
    • http://grantmedica.ru/benatuxisbgr8.pdf
    • http://pavawafupef.66ghz.com/easton_s_bible_dictionary.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nafoxuda/activesync_windows_7_32bit_free.pdf
    • http://loluwoje.epizy.com/fepiloluvasuxiwarofil.pdf
    • https://s3.amazonaws.com/viwoxuz/37826154427.pdf
    • http://bideliv.rf.gd/zuvopujagemewuzebidof.pdf
    • https://s3.amazonaws.com/gavobawum/17477297207.pdf
    • http://jofisakukobi.rf.gd/jejijobobazijux.pdf
    • http://lisodibediv.epizy.com/97697230943.pdf
    • https://s3.amazonaws.com/towakog/sportcraft_air_hockey_table_manual.pdf
    • http://latilofu.rf.gd/49771429729.pdf
    • https://s3.amazonaws.com/kefefetafij/nanutimoluvugutukojage.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c92a.bin
079fede5caf7ef53143e42d97860c9212fef5616048efb3aab289eb2243c6ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC92A 5340 bytes
font_01_sfnt_off0000db4a.bin
6b33d7cca86ed2fa4e174f42e19a8713528926eb4c9f26fd4b5c441d1fb10a80		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4A 9736 bytes

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