Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f6624666a5ef05…

MALICIOUS

PDF

82.5 KB Created: 2021-04-25 11:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1f9cf8b05af5ae54845e0fbdd1ea1dd4 SHA-1: 9b7e3e6719b1c07fbad9883286f7562526176ab8 SHA-256: 69f6624666a5ef0554ba288f628f6613939535103312b6929152cedd36c8f634
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://midufefew.ru/strik?utm_term=dbx+driverack+pa2+compressor+settings PDF link annotation
    • http://miwewumexurigan.sportsontheweb.net/prognosis_filariasis.pdfIn PDF document text
    • http://xabudumame.mypressonline.com/8132745611.pdfIn PDF document text
    • http://shoppingyxplus.xyz/tic_tac_toe_python_turtlellpz5.pdfIn PDF document text
    • http://dumubemajizukov.medianewsonline.com/70847335514.pdfIn PDF document text
    • http://tawaguf.scienceontheweb.net/toyota_camry_2017_price_in_qatar.pdfIn PDF document text
    • http://gagogepatajebe.medianewsonline.com/victorian_language_of_flowers_daisy.pdfIn PDF document text
    • http://laribij.scienceontheweb.net/wd_250gb_my_passport_wireless_ssd_review.pdfIn PDF document text
    • http://vetobiz.sportsontheweb.net/pathfinder_bestiary_5_online.pdfIn PDF document text
    • http://0fruit.space/balak_palak_marathi_full_movie_free2302z.pdfIn PDF document text
    • http://napowojeba.medianewsonline.com/valvulas_ksb.pdfIn PDF document text
    • http://pshcomonhere.xyz/postman_usage_guide0qrpd.pdfIn PDF document text
    • http://oneitshop.info/tatupigipootxlp.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/aprender_espanhol_sozinho.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/marketing_libro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://12c48f50-3553-44c7-a31c-19fc5df83d07.filesusr.com/ugd/7e0eb0_d490f0f21477476b82cc6ada26068475.pdf?index=trueIn PDF document text
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_6c999bb4cf8f498c85f6f7205c347151.pdf?index=trueIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_5e17d79091f04be98bdf45363615a817.pdf?index=trueIn PDF document text
    • https://a0f88182-e1f9-4a9c-ba22-d5ce004c6985.filesusr.com/ugd/2f3216_e4bf8b474bd0462ea01191f9eccc8b00.pdf?index=trueIn PDF document text
    • https://4b67404f-136a-46a0-9cf3-151f2d38faab.filesusr.com/ugd/241fd5_94dac0b779564a16a0c85eec851f0ca2.pdf?index=trueIn PDF document text
    • http://pigutun.myartsonline.com/business_administration_and_finance_burlington_books_descargar.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/26852793885.pdfIn PDF document text
    • http://wudemexa.myartsonline.com/jemati.pdfIn PDF document text
    • https://1c92f6d8-19eb-429c-9239-1cf6be91372f.filesusr.com/ugd/cc1a03_2456d09a23a443159c318ee880f7491d.pdf?index=trueIn PDF document text
    • http://vexabimumemig.atwebpages.com/patrick_fitzpatrick_advanced_calculus.pdfIn PDF document text
    • https://5663e088-3595-439c-971a-5873693bee35.filesusr.com/ugd/e98895_43fca57858904fad9bfb3c7becf930f2.pdf?index=trueIn PDF document text
    • https://b8436764-02b3-4471-8711-1e8fed235cf0.filesusr.com/ugd/3b3fbb_3b9be7a468f84084aaf5bc2c085a1d7e.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_off0000fef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF2 5824 bytes
SHA-256: b5284aea4122675933446619f88f033c58bad061738707fcec3f2dd8f0d8e66b
font_01_sfnt_off000112bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BC 11564 bytes
SHA-256: f7da2726ba090dbbf69b6f73103a6d3391dc056423e92688352a1387cb9c9f89