Malicious PDF — malware analysis report

Static analysis result for SHA-256 42600ee73258076e…

MALICIOUS

PDF

83.1 KB Created: 2021-03-16 20:49:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5bb2b6488d3010fc8d2e7c687f863eb SHA-1: bbece9dff851e6b566d03938fa2a7d0d2464cd2c SHA-256: 42600ee73258076ec4f0019aebf450bf32039fe7db582c29b25d27c34b8652ba
156 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a website disguised as a search result for 'tubemate latest apk for android'. This URL is likely intended to host malicious content or lead to further compromise. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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-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://jacksth.ru/wix?keyword=tubemate+latest+apk+for+android
    • https://sonilotosoj.weebly.com/uploads/1/3/1/3/131379329/95858dae792f489.pdf
    • https://static.s123-cdn-static.com/uploads/4464710/normal_6002f183634cd.pdf
    • https://xubejuvanexog.weebly.com/uploads/1/3/5/3/135311054/ponexigemukex.pdf
    • https://cdn-cms.f-static.net/uploads/4425514/normal_603432fc04c08.pdf
    • https://static.s123-cdn-static.com/uploads/4480591/normal_600012b239673.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ffcd5683-bfd0-44ef-90c5-f363cfc2e18d/small_engine_repair_certification_programs.pdf
    • https://uploads.strikinglycdn.com/files/b2d9a2c7-e287-4122-95fb-d4f3df913ebc/dirt_bike_racing_near_me.pdf
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_e78ea5cadb254be9abf6d87a1e449230.pdf?index=true
    • https://uploads.strikinglycdn.com/files/699c1391-5d15-4f07-8f0b-9fc36a8e2fd6/deleuze_societies_of_control.pdf
    • https://uploads.strikinglycdn.com/files/564fc4a8-14f5-44b1-b3f1-01d2c3133671/what_oil_to_mix_for_leaf_blower.pdf
    • https://46d16763-6c5f-4e19-aa2c-3f4071fcbec2.filesusr.com/ugd/26f730_3d9b373c7e4c425eb1dc2cd30604edf3.pdf?index=true
    • https://584dc5e1-4449-4bca-b3d9-d0e1fa08a972.filesusr.com/ugd/185caa_80331fc166c24e518d369c5040ddd78e.pdf?index=true
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_96c8209e07604f419caaeec05872621d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/69829cdb-2be4-49a1-bd18-4539eede59d4/fallout_4_new_vegas_ps4_release_date.pdf
    • http://livijakowoleb.rf.gd/18174492438.pdf
    • https://6baea7ca-81e4-4a11-8410-716433a99462.filesusr.com/ugd/764aaa_0d88b237cc5c4a14a86df11aaf28fce1.pdf?index=true
    • http://mibovemijo.rf.gd/how_to_repair_a_lazy_boy_recliners_mechanism.pdf
    • https://uploads.strikinglycdn.com/files/510eb746-7635-4e7d-be6d-f4aad082a0d5/singer_futura_xl_550_price.pdf
    • https://uploads.strikinglycdn.com/files/b4d3d7c4-f236-4fc7-a5f9-da2d8016f20d/pisovasonixolexij.pdf
    • https://uploads.strikinglycdn.com/files/a010f132-f40a-4df9-999b-5d4ca9ac8b0c/oracion_del_espiritu_santo_catolicas.pdf
    • https://uploads.strikinglycdn.com/files/58b0761b-dfd9-41ac-9b6f-69f3494fe339/asus_rt_ac66u_b1.pdf
    • https://uploads.strikinglycdn.com/files/3f4cf5ea-5e04-4dbc-8332-8cb955986c8e/80134613704.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4c3.bin
b2777e3f310de2dc2e598172f0a7820630b23ab55d0d4ffdf85e527f0f16dc51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C3 3088 bytes
font_01_sfnt_off0000ffc9.bin
c28274a77249cd9635620409f8b35f544a141ffc4cc46c27998d4eb365a9fd60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC9 5340 bytes
font_02_sfnt_off000111d1.bin
25354a409b8730a87382f6a74b788113c8f17618104497234bf5610a34f8e3e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111D1 17380 bytes

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