Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19ba4bbc357b989…

MALICIOUS

PDF

80.6 KB Created: 2021-05-21 01:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: b210e8b2e3a8749c53bfe5fb47071fdd SHA-1: e8e6100acfad04d7bec9c1ea9fa506573f6bef83 SHA-256: e19ba4bbc357b98925f4360dac16de5d98b219a33340da0b0cc3d4a2e4d33ca0
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for phishing or redirecting users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The presence of embedded URLs suggests the document is designed to drive traffic to external resources, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://xajibur.ru/strik?utm_term=how+to+unlock+all+instructors+in+xenoverse+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412761/normal_602e04cadaa60.pdfIn PDF document text
    • https://rikolalevagamer.weebly.com/uploads/1/3/1/1/131164452/bebukixapes.pdfIn PDF document text
    • https://vomukefepa.weebly.com/uploads/1/3/1/8/131872153/7158208.pdfIn PDF document text
    • https://kamojadatuxam.weebly.com/uploads/1/3/5/3/135316538/vapuwazenakuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410013/normal_600bb23d85bb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369495/normal_6062f10f1ef01.pdfIn PDF document text
    • https://favekenada.weebly.com/uploads/1/3/0/8/130874403/sinudemusojute-vudafaji-tegatogapabowo.pdfIn PDF document text
    • https://zepafasamog.weebly.com/uploads/1/3/4/3/134361306/4323119.pdfIn PDF document text
    • https://tukobigerokigab.weebly.com/uploads/1/3/4/6/134653943/3483655.pdfIn PDF document text
    • https://sovezoku.weebly.com/uploads/1/3/4/7/134731827/51ea9fe14b15.pdfIn PDF document text
    • https://jenamojid.weebly.com/uploads/1/3/1/0/131070605/8827838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483837/normal_60642b288f2aa.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/tetenifeme/vozedo.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/xuzuniserefunefitador.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/example_of_a_work_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/1524079353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c85eab11-a8e5-4abc-b3d6-8e694876197c/does_nest_require_c_wire.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/zinajororuk.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/girilasovotunewuzedor.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/what_is_the_limited_menu_at_burger_king.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c31b9926-5567-465b-9ae3-6d830cb0a2c4/99899558063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcc4b003-7d2c-4e5a-a56c-fd9221e1b04b/plants_vs_zombies_2_chinese_version_2.2.0_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15ee4cda-30d7-45cb-bd4f-7d0b2347d658/how_to_clean_your_gas_fireplace.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/subject_and_object_pronouns_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/5018809421.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D2 5052 bytes
SHA-256: 2325b8b511d006d45dfd2a3b93cae725ace43900c0c753909c61da8c7b183e84
font_01_sfnt_off00010227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10227 10684 bytes
SHA-256: 14cf49b22c54d713ef8b97a2ce9a95b668ce381bd43de1376c8271740651b63b
font_02_sfnt_off00012682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12682 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71