Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e84765c8d634d3a…

MALICIOUS

PDF

70.6 KB Created: 2021-03-15 15:20:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7ececc614340e89c360e650ad97f3580 SHA-1: 19adfbba7a1f56dc1d7e938bce514ebde3aa6fea SHA-256: 7e84765c8d634d3ac133571ea52a4d34e77d01fa8e7174825631100252e8d9a4
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 0.9991

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://leonvi.ru/strik?utm_term=what+should+my+hcg+level+be+at+5+weeks+pregnant PDF link annotation
    • https://vetasokimatajed.weebly.com/uploads/1/3/5/2/135296406/puxulu.pdfIn PDF document text
    • http://saudiautoinsurance.com/new_mega_man_mobile_gamem1p49.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/CgcgeCd/alan_walker_best_songs_offline_mp3_apk.pdfIn PDF document text
    • http://jixapijojuxev.iblogger.org/fupokawiloxegotivirapegob.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/hbjgGjc/kogebaxanufigijuga.pdfIn PDF document text
    • https://cdn.sqhk.co/monubinejon/XpNQhaR/44959745568.pdfIn PDF document text
    • http://help-igcopyright.xyz/vuteninuwezazamuxodemip4p3h.pdfIn PDF document text
    • https://fajesafopumusid.weebly.com/uploads/1/3/1/8/131871419/8bf4240cb21.pdfIn PDF document text
    • http://makedctl.site/44089696724x0kog.pdfIn PDF document text
    • https://buruwezixefekiw.weebly.com/uploads/1/3/0/7/130738548/pagitijagut.pdfIn PDF document text
    • http://swiss-gear-top.xyz/6232912382741cpm.pdfIn PDF document text
    • http://tonerinkstore.com/camera_flash_emojinm7lh.pdfIn PDF document text
    • https://kesupegujofoju.weebly.com/uploads/1/3/5/3/135388852/kirozizotiziwefef.pdfIn PDF document text
    • https://cdn.sqhk.co/rijatazuga/gjaUbhg/7394743148.pdfIn PDF document text
    • http://lezobasametu.22web.org/trx_basic_training_youtube.pdfIn PDF document text
    • http://parhelifrl.space/868443604090p1th.pdfIn PDF document text
    • http://onlinetiser.website/dawevuwuxajimigeladcqjjg.pdfIn PDF document text
    • https://boziwukajolefix.weebly.com/uploads/1/3/2/7/132711983/sifisurazivo_vupelibezekadu.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/d7ff77f0-1cb3-486a-9e81-08e4439d20ef/96143429373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a0f222-6dd6-494f-853d-94f7eb098e37/dituvobubuwafepoz.pdfIn PDF document text
    • http://bevamixebigal.epizy.com/audi_a6_2014_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c9fe052-4bc5-488e-8fc9-43ecdfdc3ae8/40996252759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60310ca0-b6ef-48a0-b3cb-31a77ce0cfa0/fofitik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50d5e83b-4541-4603-abac-02124c9c4c44/how_do_i_connect_my_barcode_scanner_to_my_computer.pdfIn 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_off0000d4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CA 6084 bytes
SHA-256: 1d16ef46ece06ac34d7792b8d0b7b22d889cdd7026fa25579c5deadb2a5c7f49
font_01_sfnt_off0000e974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE974 10348 bytes
SHA-256: 61e41ebc1bad1dd54aba07f8753ad0da4819ebfc19937cfddb8c6d68526f8502

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