Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0ea028b3efacf8…

MALICIOUS

PDF

95.4 KB Created: 2021-03-21 11:10:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 299265a763da01b28436c0754e59e1ec SHA-1: 3605115369e23d2ec7c861a5c288f3f2f833e40c SHA-256: 6b0ea028b3efacf870cdb7423b9836de56a4dec07b5094f6b74e056e676fac36
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to host a phishing page or download further malicious content. The document body, though heavily obfuscated, contains keywords that may be used as lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=safy+boutella+instagram PDF link annotation
    • http://wemedimixodi.iblogger.org/what_are_good_relationship_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/shjchhb/susov.pdfIn PDF document text
    • https://cdn.sqhk.co/rutunidosaw/jeigsaY/pioneer_smart_sync_android_version.pdfIn PDF document text
    • http://nadozigipak.22web.org/how_to_connect_rca_portable_dvd_player_to_tv.pdfIn PDF document text
    • http://lagepukoz.22web.org/coreldraw_2020_shortcut_keys.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxowowi/6jfieha/tugufuwifulukiveleluxi.pdfIn PDF document text
    • http://braco.ru/sandwich_maker_3_in_1_lidl4ghtw.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/Zphhejh/84933448258.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/ghIcNPW/lusigiwip.pdfIn PDF document text
    • http://indohealth365.online/junomivinenemumedofasexunzdwe5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mufukep/12962329536.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/worudisasef.pdfIn PDF document text
    • https://f4b9ed98-44c1-44e6-9966-d9817cd43de7.filesusr.com/ugd/9ced5d_1f5addb246c24e0c916b7fca369ae35c.pdf?index=trueIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_4b088acb69ba41c3b8780470e80c8c59.pdf?index=trueIn PDF document text
    • https://56a79910-2d97-40e4-a1df-bca3b17021d7.filesusr.com/ugd/2721fc_91c635de031e42d893206157fc7724ea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/17883860322.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/stihl_fs_130_weed_eater_price.pdfIn PDF document text
    • https://28f2c00a-638b-45ec-8848-4d649cb6aba9.filesusr.com/ugd/946f28_ab9c3cc3ca584927880cd4272211ec74.pdf?index=trueIn PDF document text
    • https://184d393c-d2ff-49e5-bbcb-48626b1dbf88.filesusr.com/ugd/49be48_e27dc39b7af04af8b0383c85cc68b73d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/2012_toyota_tacoma_owners_manual.pdfIn PDF document text
    • https://c1f973cf-d719-4acb-8f9e-cd83ae4fb94d.filesusr.com/ugd/057766_78c8cbe109934e07bf47921a337cecfe.pdf?index=trueIn PDF document text
    • http://ralavokapijalig.rf.gd/97415678719.pdfIn PDF document text
    • https://2eda13a9-9e0f-47dd-bbfa-a9a5028a3314.filesusr.com/ugd/61c57f_3a9d5aac0cda4f2cba5ea0387b5167bd.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000147b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x147B2 17392 bytes
SHA-256: 1bc5099bc7d5586a3ef895a47598fd92ee210578d4657921671cb30775ce2fae
font_00_sfnt_off0001045e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045E 5316 bytes
SHA-256: 680065950da3dbb19edc3b808ff31eab1e7e96856c384cf9120183a2dcc12faf
font_01_sfnt_off00011654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11654 1648 bytes
SHA-256: db10b07aa1ba911afaf060b12e2cde8c70dbbf9941f30369d108722010ce9547
font_02_sfnt_off00011e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E9E 12636 bytes
SHA-256: 69962f54588d2d04ca115cdcd2ae7d8d600379657c902f46d30be38035f4b42f
font_04_sfnt_off00016128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16128 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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