Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f08737421716318…

MALICIOUS

PDF

107.4 KB Created: 2021-04-04 11:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 65c69d2f48197856a5d47ae0da43214c SHA-1: f6b3aaff655f5631a922e2bc061ffb49b2c40ff3 SHA-256: 9f08737421716318dfbbe5c8102de026607d64215301aea2a4634de5f2554e7d
96 Risk Score

Malware Insights

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

The PDF contains an embedded external URI pointing to a suspicious domain, which is a strong indicator of malicious intent. ClamAV and ML classifiers also flagged this PDF as malicious, specifically identifying it as a phishing trojan. While no scripts were directly extracted, the presence of the malicious URL suggests the document's purpose is to redirect the user to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://pelibifir.ru/123?utm_term=define+apoplectic+form PDF link annotation
    • http://tufuwavaziga.mygamesonline.org/48770547485.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/identification_of_fungi_based_on_morphology.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418566/normal_60158cda9347f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406820/normal_6057c87387267.pdfIn PDF document text
    • http://rabemedexisubis.mygamesonline.org/toworabeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413713/normal_604d18e25eab3.pdfIn PDF document text
    • http://xitimudajejo.mywebcommunity.org/nubawedodorunizotobakuju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/017a6ef1-5d94-420a-b6da-ccc50412a656/xenasogudaroliwiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a5ed995-fcc9-44c7-94ae-d9c710fbe3ac/cvlife_hunting_rifle_scope_6-24x50_aoeg.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/89625452832.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74e49527-86ab-4298-9abd-f97d586ee9f7/iso_9001_tahun_2015_bahasa_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/49064366875.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/74871072832.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6e6e80-c7a4-4058-8a7a-4a2eb71b42be/pnl_la_magia_en_accin_richard_bandler_y_john_grinder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aa95002-9db8-48b9-bab6-a9b07ff2df42/saletokoxalofazalizivexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7224c04c-685b-4c4c-9a52-1bd4ca8ccb63/lamborghini_gallardo_v10_0-60.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/asthma_treatment_guidelines_2019_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5a30f7b-4998-4a4d-a48b-7f76728d8420/oster_french_door_countertop_oven_recipes.pdfIn 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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off000173e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x173E1 18176 bytes
SHA-256: b22710da0d81dd36a81e8e78bcecf4ea7c2753a5b0ec201b4feebcf02f812944
font_00_sfnt_off0000e770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE770 5684 bytes
SHA-256: 721cc2fdd3dc595dcb3ceb283710897e6e3f946895107a6db3eba0a731c1121f
font_01_sfnt_off0000fb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4D 4980 bytes
SHA-256: 423d9765bdb42ccf5922de7c7cf876f2705bbb2a3fccacd1bf1d1f9ed8eee7e9
font_02_sfnt_off00010c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C33 2656 bytes
SHA-256: ff8289fcab20b7b81f5dc7c47458689637225d7099c48932a46d6898d6123f6c
font_03_sfnt_off0001173a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1173A 2328 bytes
SHA-256: 18b250f24057ce91e4a59b25c1eec79fa8b4d7e2cb9f6c0de02c7e032a072fd4
font_04_sfnt_off000121ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121EF 2108 bytes
SHA-256: 5fc9e2cd4e7ad04544edda2023dd698132b65daf167a61e09de9fd8de66d8b52
font_05_sfnt_off00012bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BBA 6640 bytes
SHA-256: 593a452f0795506ac97007ad32b21767cc543cb1bc716fd74108abb5279d52e6
font_06_sfnt_off00013d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D58 18732 bytes
SHA-256: fa7021fbb85a318fb7fed0da685bc6f560cbc9ab54af5c503192875f666524ed
font_08_sfnt_off000190ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190AD 3276 bytes
SHA-256: 36e71c95d3b6602ce175a98ac99a2c18c99235fab0e24c6c46ec4ff9e72f8c94

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