Malicious PDF — malware analysis report

Static analysis result for SHA-256 003ad30d7d0ef80b…

MALICIOUS

PDF

78.5 KB Created: 2021-03-22 03:07:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6ad4df969dad6ff0d745fc66da4f88c6 SHA-1: edf7288de8916e0bce41f0c75d84abfdd2645b48 SHA-256: 003ad30d7d0ef80b96318eece168ded9b33077938a28b2992b23a24dbfe6bbd2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://crophysi.ru/123?utm_term=dawn+of+war+dark+crusade+guide PDF link annotation
    • http://bcpzonasegura10beta-viabcp.com/the_maze_runner_ending_songnl3uo.pdfIn PDF document text
    • http://insurancecarusa.com/xanarodanebmipiy.pdfIn PDF document text
    • https://zavoroxovedigij.weebly.com/uploads/1/3/1/3/131398250/kidib.pdfIn PDF document text
    • http://wutugidejavazu.scienceontheweb.net/adivinanzas_de_animales_para_nios.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/1355713.pdfIn PDF document text
    • https://jalusuduzewot.weebly.com/uploads/1/3/1/4/131456012/1376222.pdfIn PDF document text
    • http://tujijamutibe.sportsontheweb.net/definition_of_forensic_accounting.pdfIn PDF document text
    • http://reduslim-europa.site/how_to_configure_arris_dg1670ldmc3.pdfIn PDF document text
    • http://kpupnov.pro/tojuturuvo7244f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420014/normal_60047fcabbd98.pdfIn PDF document text
    • http://grafoanaliz.ru/63029875978xxgio.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/AhggcfW/the_political_machine_2020_free_download_android.pdfIn PDF document text
    • https://ramasiwo.weebly.com/uploads/1/3/5/3/135390431/96911.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448328/normal_5ffcad813f112.pdfIn PDF document text
    • http://tuderoba.getenjoyment.net/tuledegegixeg.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/HpijFlk/mojafuroxavuzupezu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_6041d5d817800.pdfIn PDF document text
    • http://glossywp.online/the_plague_camus_synopsisasovt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F1 5312 bytes
SHA-256: ad30724ae4057d3bcdc175ade17de24097a74f33ec50b870a60be0d776556145
font_01_sfnt_off00010933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10933 10512 bytes
SHA-256: eef16abe6a6349410f08b0f5bca679d8d70f1ce5d110497fb5320920edaad24c

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