Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e5355d9ece45a7…

MALICIOUS

PDF

79.6 KB Created: 2021-03-24 11:52:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 16d9e63137cfce2e8c2ec38d8be0aec7 SHA-1: c7a78a8d872d0e1d0eeb565831a4070366604d57 SHA-256: 00e5355d9ece45a7da1cd35c408492f83f67e1692f9395d86de73216b324dc3a
186 Risk Score

Malware Insights

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

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 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://golowaki.ru/wix?keyword=new+crusading+guide+ghana+newspaper PDF link annotation
    • https://kebopudej.weebly.com/uploads/1/3/5/2/135298692/a11b9b.pdfIn PDF document text
    • https://lewanodeb.weebly.com/uploads/1/3/4/8/134885095/22ff5b592a.pdfIn PDF document text
    • https://ribiridoxa.weebly.com/uploads/1/3/0/8/130874248/xuxakijadisovod_sufagejipupaxu.pdfIn PDF document text
    • https://nedatukurugajim.weebly.com/uploads/1/3/6/0/136022322/dazugaradi.pdfIn PDF document text
    • http://4gusevshop.space/37501970430laqoj.pdfIn PDF document text
    • https://teduruperalugo.weebly.com/uploads/1/3/4/3/134320262/gakonaxinapo_folegagos_pimojid_budaputeb.pdfIn PDF document text
    • https://pojasulexubu.weebly.com/uploads/1/3/5/9/135993084/8293618.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/izgfXhe/ufc_254_odds_fanduel.pdfIn PDF document text
    • https://cdn.sqhk.co/puruwedisuma/AlieuvQ/37782366761.pdfIn PDF document text
    • https://cdn.sqhk.co/murafabu/jgzTVhi/download_shell_racing_mod_apk_android_1.pdfIn PDF document text
    • http://valuburikodajad.medianewsonline.com/19042320772.pdfIn PDF document text
    • http://fakexexu.sportsontheweb.net/52195003912.pdfIn PDF document text
    • https://wagemerefav.weebly.com/uploads/1/3/2/7/132712282/jelijide.pdfIn PDF document text
    • https://lofefogurabu.weebly.com/uploads/1/3/1/1/131164054/64c425bda4c35.pdfIn PDF document text
    • http://freshka.fun/4r70w_valve_body_gasketjucgr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/potofaw/congestive_cardiac_failure_nice_guidelines.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/changing_fuel_filter_mercury_150_efi.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/android_one_nokia_3._1_review.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_off0000f94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94E 5364 bytes
SHA-256: 414c5892fe0b30f1319a2cb03b1f041008f2b34c4a7a973fbe3c129c1face2e5
font_01_sfnt_off00010b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9D 11464 bytes
SHA-256: 87f76f07b532bedeb70eea8b2399fcdf33ddafb64850a9c11ca5e60d470624e1

Open this report in the interactive analyzer, or submit your own file for analysis.