Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae1aec4a3127654…

MALICIOUS

PDF

86.7 KB Created: 2021-03-27 20:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27fedd37d5e7db80251908dad96f7809 SHA-1: 52dd6de14dfbbfa17392036da258f687b76ad7b4 SHA-256: fae1aec4a312765448bd7e22726c4c8820d38617bee0f5dce9824397e5747cb9
156 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 phishing or trojan threat. It contains an embedded URI pointing to 'lozipotod.ru', which is likely a malicious domain used for phishing or to serve further payloads. The heuristic 'PDF_SEO_LINK_FARM' suggests the PDF is part of a larger link farm, indicating a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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-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/award?keyword=bart+station+map+pdf
    • https://xafozidej.weebly.com/uploads/1/3/4/6/134643925/gigaradoda.pdf
    • https://dodukitomot.weebly.com/uploads/1/3/1/4/131407143/7849839.pdf
    • http://wizimesataw.22web.org/19942309758.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/posufij/78958853998.pdf
    • http://kosigasarem.epizy.com/80592916326.pdf
    • http://gapexer.rf.gd/list_of_common_acids_and_bases.pdf
    • https://s3.amazonaws.com/wowonesoribu/96454790508.pdf
    • https://s3.amazonaws.com/wovugi/40732550864.pdf
    • https://s3.amazonaws.com/bejexe/modo_de_produccion_primitivo_resumen.pdf
    • https://s3.amazonaws.com/bevarolimesale/balance_sheet_of_any_company_2018.pdf
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_9d1e96b017254b6a877bfded76b3c3e9.pdf?index=true
    • https://s3.amazonaws.com/votubukaxogilix/wupojizizeduxixup.pdf
    • http://sukifimogu.rf.gd/the_darkest_minds_movie_where_to_watch.pdf
    • http://fuxedozet.epizy.com/blackjack_basic_strategy_card.pdf
    • http://jufakoxageponuz.rf.gd/mituxopumod.pdf
    • https://s3.amazonaws.com/bejeseja/as_1684._4_free.pdf
    • https://56c41596-c8b3-4aa7-a075-23c9724d7f97.filesusr.com/ugd/ed77b2_ac6195f2301242919ae3c57ca4930a06.pdf?index=true
    • https://s3.amazonaws.com/xapijifas/how_to_print_a_painting.pdf
    • http://pukexisigezome.epizy.com/sony_bravia_32-inch_lcd_tv_2008.pdf
    • https://s3.amazonaws.com/firigugixujotov/paruragukofedi.pdf
    • https://619c993e-e215-4b07-891b-88776ecab8c8.filesusr.com/ugd/1fce43_a5384fb644e34556b9a8a73ca05c9208.pdf?index=true
    • 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_off0000dad2.bin
e4a730351fa384ec7dffa3876e80bdef4f81c4e359c1109feda20f69b69df640		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD2 4876 bytes
font_01_sfnt_off0000eb33.bin
08b9bf5421a191b15c0a1cd791acc7ea5934ad947c236071a9d7738d068d74c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 8592 bytes
font_02_sfnt_off00010583.bin
7c27e9b7ecaf9ae4e993eba1db394de3ecb3726feeee2a726e85affaf95f71c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10583 10648 bytes
font_03_sfnt_off00012a4c.bin
9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A4C 16036 bytes
font_04_sfnt_off00013eb5.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB5 4324 bytes

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