Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39aa4ff761f29b9…

MALICIOUS

PDF

69.6 KB Created: 2021-04-06 23:18:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 7804f8befcf556450bac3a8738c9ffe4 SHA-1: 27f080ccf2dfb8c435d81402dbf8025a57c14da4 SHA-256: e39aa4ff761f29b9b6cd57a5780743a1880e054d671a8a23e9fd1e69d760472e
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristic detections indicating it is a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to 'Minecraft alt generator' which aligns with the observed URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/wix?keyword=minecraft+alt+generator+discord+bot PDF link annotation
    • http://fujigukatujewu.medianewsonline.com/xijasubin.pdfIn PDF document text
    • http://oneplusonemain.xyz/comparative_literary_analysis_essay_examplehc1u9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467322/normal_6054afa56f21f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454966/normal_6036dba83d91a.pdfIn PDF document text
    • http://vijepuwobewi.mygamesonline.org/fevosanazijezereri.pdfIn PDF document text
    • http://islemleriniz.org/20768371948xrcjb.pdfIn PDF document text
    • https://zakemobuka.weebly.com/uploads/1/3/0/7/130775752/598633a4a58072.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_6046f8ab37f71.pdfIn PDF document text
    • http://glasshookahcatering.com/dubai_tour_guide_update89109.pdfIn PDF document text
    • https://xigepeseforala.weebly.com/uploads/1/3/4/5/134508125/9888005.pdfIn PDF document text
    • https://jedidaril.weebly.com/uploads/1/3/4/6/134687024/2575354.pdfIn PDF document text
    • https://bipuvoru.weebly.com/uploads/1/3/5/3/135336843/5129661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416805/normal_606b6d45b96a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/855396e9-2a27-4d90-9437-2d92bde280b8/visenenorilodiluxomoreza.pdfIn PDF document text
    • https://14579757-8399-40ae-9aa0-1c510f02119b.filesusr.com/ugd/5613ee_2b823dc4270849e3a95f4cc1768aa012.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/29aa18d7-a843-4475-b685-caa1912aec92/kemarizemesobef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9c26a0-2013-4b4f-8816-8fcd45562d95/gta_5_all_cheats_pc_money_codes_ps3_story_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48ddb389-7237-4480-96df-8e341970033c/mokifumejolebama.pdfIn PDF document text
    • https://1b3fde16-7575-45ba-b40e-8916c64185ca.filesusr.com/ugd/8874e8_5d33c60ba27647068773adda95b148b8.pdf?index=trueIn PDF document text
    • https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_e9414e2cdb5f4fc7a8b423d55f9866e0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/29b17286-c721-4958-b5c5-271e752c8e19/how_many_calories_in_a_maple_bar_donut.pdfIn PDF document text
    • https://7f1d4f38-7308-4051-b389-b8ed31312188.filesusr.com/ugd/e948c1_d9a2ab1fb7bd45f68669d085611d7135.pdf?index=trueIn PDF document text
    • https://30372bae-fb3d-4285-bee0-d91e70c22047.filesusr.com/ugd/835091_5f2c82f698784f74a0139ab05f7de989.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC8 5332 bytes
SHA-256: abbfa4486c28fd28cd56ba353f67736a430ff0dc746f9163e1f0cd9e3a6551a1
font_01_sfnt_off0000e002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE002 11492 bytes
SHA-256: f2f785cd6a6803031ece8acc39e9c7af2d745f14f5fd3a3c7a6925da23ba3dfc