Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f4626b7a8898f6…

MALICIOUS

PDF

80.2 KB Created: 2021-03-20 16:01:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: dc6272797544f11b90f39a4b462ab86c SHA-1: dd267401d3c4822176803465abfc0f40fcd8122a SHA-256: 60f4626b7a8898f6425165f945e37f808c6c0d672142693c7529f20d09a32be4
244 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to disposable domains and redirector infrastructure, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to financial independence, likely a lure. The presence of numerous external links and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=charles+schwab%2527s+guide+to+financial+independence+pdf In PDF document text
    • http://torchqbfl.fun/bexujetesixixosanikaruto5kzh7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494452/normal_60043301c3f74.pdfIn PDF document text
    • http://parkji5x.xyz/vamexusagabavobatuobwzv.pdfIn PDF document text
    • https://kototavuwo.weebly.com/uploads/1/3/4/6/134696015/gomonakagedugomag.pdfIn PDF document text
    • http://fasad-dom.site/le_petit_prince_chapter_10_englishamy3z.pdfIn PDF document text
    • https://rojurunonujimos.weebly.com/uploads/1/3/5/3/135325454/kuvoxijofapemi-subukovalufe-luvujazij.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/izoSX23/the_smurfs_bakery_download.pdfIn PDF document text
    • http://btsworld.org/4342395004sxp6a.pdfIn PDF document text
    • https://cdn.sqhk.co/kerosumumato/69StbaK/regal_cinemas_turlock_stadium_14_movie_times.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/jgp3JWM/23051385183.pdfIn PDF document text
    • http://futup.ru/zip_music_files_downloadmozoc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367938/normal_5fffe09288796.pdfIn PDF document text
    • https://tipizilij.weebly.com/uploads/1/3/4/4/134462633/6b1df9c33508f71.pdfIn PDF document text
    • http://beliyden.xyz/einhell_msf_570_manual_snow_blower_shovelscufq.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/kgjajeS/tap_dash_free_download.pdfIn PDF document text
    • https://gorasamigizutod.weebly.com/uploads/1/3/4/6/134600185/lifujodovap-bolikileke-xesadanexuxu.pdfIn PDF document text
    • http://coolmag.biz/navy_bdu_uniform_for_salegestj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483623/normal_600d39931caa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505326/normal_601baa60bf3fb.pdfIn PDF document text
    • https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/sunemumotaja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451737/normal_5fef1a8d999a6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_db5214e70e90453796aae30aac6fc7ca.pdf?index=trueIn PDF document text
    • https://459ec6dd-5b69-4322-a182-74abbfaa0e48.filesusr.com/ugd/221eaa_71f842ea5afe4a7da6c166a6725be347.pdf?index=trueIn PDF document text
    • https://ac685e6e-6442-44c0-91a1-b3a367e79ef2.filesusr.com/ugd/ce77c6_a0d19c8ae41f4c6695d34bead3ccc092.pdf?index=trueIn PDF document text
    • https://b23183eb-b2e5-455e-bc25-91fac1efd10f.filesusr.com/ugd/cc14e4_9480d4e07d93478eab93049a35e59d96.pdf?index=trueIn PDF document text
    • https://5d3a357a-25b2-4459-9cd8-210b235f7b36.filesusr.com/ugd/45e30f_4daadbdf4a1a4e97a390ba8315818173.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ece7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE7 5588 bytes
SHA-256: 9a935ba8b0f82420a01a3d63357e5b86031a09f3dae4ab663b6ededd8568e2dc
font_01_sfnt_off0000fff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF3 10760 bytes
SHA-256: 24942cff1c214059653fa9a3b5b5fd8c6f355c6b26e316d21211a58983984295
font_02_sfnt_off000124c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3