Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb98e2246ff39f6…

MALICIOUS

PDF

73.5 KB Created: 2021-03-09 16:03:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 8c21440eaf95f1f009c6dc6b8bc5ee83 SHA-1: 62bee5f9f2254a11e2aacdd85b956211be57adf5 SHA-256: 3eb98e2246ff39f67dc6e6a617b4dbb5a29f312c0b7a092185fb44cc9a305396
122 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirectors and disposable hosting, indicating a phishing or scam attempt. The document body, though heavily obfuscated, suggests a notification context. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8823

Heuristics 3

  • 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 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.
  • 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://dafemum.ru/award?keyword=ceptam+notification+pdf In PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/migatigekonovurakapa.pdfIn PDF document text
    • http://muzomabavima.medianewsonline.com/verizon_fios_wifi_password.pdfIn PDF document text
    • http://pokemonrivals.online/bimasena_sdd_liveryz3mg5.pdfIn PDF document text
    • http://goproits.com/spoon_river_animal_clinic_in_canton_illinoisaj9dy.pdfIn PDF document text
    • http://teleporttur.ru/emerson_3051_price8zd21.pdfIn PDF document text
    • http://youtube-subscribes.com/popenusibobalotixsaei.pdfIn PDF document text
    • http://chebsvet.ru/8699438892885hx9.pdfIn PDF document text
    • http://legendbilisim.com/acetic_acid_forms_dimer_in_vapour_phasedp1n7.pdfIn PDF document text
    • http://byseles.xyz/bixosutomikokujero3hl41.pdfIn PDF document text
    • http://formulamoney.top/jukufarolaxoffawxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dakawat.epizy.com/68742109701.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/nurad.pdfIn PDF document text
    • http://kediditu.rf.gd/coreldraw_x7_with_keygen_free_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/41338229398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6540f8-6aed-4c54-a8c9-7f9d85306b84/broan_stainless_steel_range_hood_30_inch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b688f6-7dc3-40fe-a3be-dfff3f19d44b/47302312396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/944c20e7-4760-4d86-8adf-7c4317ca4264/rx_570_vs_gtx_970_tdp.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/94313520273.pdfIn PDF document text
    • http://tagugatukosag.epizy.com/tipisurubasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ee9c623-eca5-4979-9ab8-cb112a206940/lunugebutamakoduxu.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE37 4900 bytes
SHA-256: c386eb5baba07e4ef71a7133915b8fdf4e3de5e530b797b1886888c7bab56817