Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74fd5698ddb01bd…

MALICIOUS

PDF

97.6 KB Created: 2021-04-02 08:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0da3b3ca340a711e03bc33be53bb7d0 SHA-1: 2416e17ddbb301e2f413c68546af515d0b95f389 SHA-256: a74fd5698ddb01bdb41ba3a30c38f40cea2abc81165a755413d5a422bdd39da1
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, indicative of a link farm used for SEO manipulation or to host malicious content. Heuristics strongly suggest an advance-fee scam lure, presenting a fraudulent lottery or prize scenario. While no scripts were directly extracted, the PDF structure and external links point towards a phishing or scam attempt, likely leading to further malicious content or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=darien+arts+center+calendar
    • https://xamatetafuxu.weebly.com/uploads/1/3/1/6/131606968/2a98b8035462.pdf
    • https://cdn-cms.f-static.net/uploads/4457006/normal_5fdafd54d0a5b.pdf
    • https://static.s123-cdn-static.com/uploads/4366987/normal_600417254cc77.pdf
    • https://cdn.sqhk.co/bomemenun/fG1ggCU/crown_printable_worksheet.pdf
    • https://cdn-cms.f-static.net/uploads/4477409/normal_601650b0f26db.pdf
    • http://basidugom.mygamesonline.org/tusapolitepedixu.pdf
    • http://beririka.scienceontheweb.net/hernandes_dias_lopes_livro_de_joao.pdf
    • https://cdn.sqhk.co/lolumebitana/fpcmibT/oscar_wilde_barbarism_decadence.pdf
    • https://bagawilikazukir.weebly.com/uploads/1/3/1/0/131070307/nozerejol.pdf
    • https://zaxanedipujez.weebly.com/uploads/1/3/4/5/134582154/add01b18e5.pdf
    • https://gadufekovofu.weebly.com/uploads/1/3/4/7/134764592/7267188.pdf
    • https://vixugusimuxomuj.weebly.com/uploads/1/3/0/9/130969476/3970892.pdf
    • https://cdn.sqhk.co/wazikunal/jiahfDP/82280611486.pdf
    • https://cdn-cms.f-static.net/uploads/4412762/normal_604e799487474.pdf
    • http://xupulakikovuxo.mypressonline.com/tetumokoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://9f4ad419-87ad-4507-9b23-40b7c7395cc9.filesusr.com/ugd/55478e_06edcb078a1b4990aeabe3b0e9cf6eb0.pdf?index=true
    • https://502e425a-54a0-4661-a3e6-c6e116bdb13d.filesusr.com/ugd/10da26_d3668397718b4422ae3280e9e140ffe7.pdf?index=true
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_cbda4f80603c4f0e8f09ba2369bb7555.pdf?index=true
    • https://5e9c932d-19a8-4d5a-a970-d4bc0bcb832b.filesusr.com/ugd/bae0a0_bf80811459f0462282176a91c6a42571.pdf?index=true
    • https://1416a32c-f91c-4ec3-9c10-bfdf610c7df7.filesusr.com/ugd/76de1a_e635cec12ea14d3d8643c444c009579a.pdf?index=true
    • http://fatavetotujel.onlinewebshop.net/nefuziko.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129a1.bin
acf5d3fdb127646735a60eac6fc714f54ccfb0aaae24028c62a402dd5cad58e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x129A1 4932 bytes
font_01_sfnt_off00013a6a.bin
8515fdb54bc71346464b09b3af12ef72aeb51ed3abcc026ad943f6e0e4db1b4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x13A6A 8180 bytes
font_02_sfnt_off00015126.bin
2d2d2e5cdbe377a2a3646c32664bc0733ed08a08371b7c1334a6740575ddf5cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x15126 12020 bytes