Malicious PDF — malware analysis report

Static analysis result for SHA-256 350a1419e34ba714…

MALICIOUS

PDF

81.0 KB Created: 2021-03-25 04:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 88e19cf72d8c32b04a9e4f3e3095875b SHA-1: 2d453b5bc0e73355b9d8404c1b9a5341b787bedf SHA-256: 350a1419e34ba714308566f34a5a0155aa43919140204b0295435ba22174bb65
186 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or malware distribution lure, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. It contains numerous external links, many pointing to disposable domains or subdomains, suggesting an attempt to redirect users to malicious content. The ML classifier and ClamAV detection further support its malicious nature, flagging it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://jottigo.ru/strik?utm_term=how+long+do+you+cook+chicken+breasts+in+the+crockpot+on+high PDF link annotation
    • https://cdn.sqhk.co/niramojiga/gdpQiix/netflix_christmas_movies_2019_release_dates.pdfIn PDF document text
    • http://bofinaposo.iblogger.org/bootcamp_error_ing_windows_support_software.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/6e75e9edaf.pdfIn PDF document text
    • https://cdn.sqhk.co/basinasedu/cibaqKX/76742566929.pdfIn PDF document text
    • https://zoxusikajikad.weebly.com/uploads/1/3/4/8/134851315/1585534.pdfIn PDF document text
    • http://gekalam.22web.org/kudaxuvemizepudobuwedeti.pdfIn PDF document text
    • https://wafewukim.weebly.com/uploads/1/3/5/3/135399971/kuraret.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/3335043.pdfIn PDF document text
    • https://cdn.sqhk.co/zumiredosuwi/4Oidji2/asphalt_nitro_8_airborne_apk_download.pdfIn PDF document text
    • https://kiwosadil.weebly.com/uploads/1/3/5/3/135384828/1156312c3.pdfIn PDF document text
    • http://zibodotuf.mygamesonline.org/convertir_un_archivo_a_word_editable.pdfIn PDF document text
    • https://lobexakelo.weebly.com/uploads/1/3/4/0/134097599/litefipojapuguv_kekufifaduminet_baguvisi.pdfIn PDF document text
    • https://sejukato.weebly.com/uploads/1/3/4/0/134018084/waturifim_vuziravogate_wages.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/BheDjcY/dip_nails_near_me_prices.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gemawinikifiv.myartsonline.com/que_es_bailoterapia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa6b34f9-cc30-41b2-bcfe-b03254d7a07f/22023751027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5ab2b8-5df3-4a9a-943a-ea5addeedbfd/29828405531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b92afb3-a6e9-4dfd-94bc-2315c4fe34c3/76156934558.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/908780c5-c5f1-4641-b800-d361b5b6e032/dyson_v8_animal_cordless_stick_vacuum_attachments.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f739e00-3be7-4e7c-9d91-dd4559102346/bebop_scales.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_off0000fb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB70 5692 bytes
SHA-256: dd8abfb48ce5ba6a2d54fb769d61c1714052ea4e158c2306e6a022fbd39e8221
font_01_sfnt_off00010ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED8 11172 bytes
SHA-256: 48ff9d8bee923559b4c55cc599db2566001f06413bd706e74552b486722546e5