Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aa61c51db129d70…

MALICIOUS

PDF

76.5 KB Created: 2021-03-24 19:12:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32c01442c5f9059517cbf263fad83ffc SHA-1: 12a2f276e6144c90ed50ff44cbad8cbb13d14692 SHA-256: 8aa61c51db129d7068491091957a2e840ec411dc4e71a646a4d36006ce2fcbe8
196 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, leveraging lures related to lotteries, prizes, or parcel deliveries to entice users. The presence of a large number of external links, many pointing to PDF files, suggests a link farm designed to improve SEO for malicious or scam-related content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, likely involving redirection to phishing or scam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://seumenha.ru/strik?utm_term=why+are+land+grant+colleges+important
    • http://wegaturagifo.getenjoyment.net/monemiroparorezizivavib.pdf
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/76fadddb9f2e050.pdf
    • https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/dibapuvubesul-sovajeferukopo-fopidobukuxob-pajuru.pdf
    • https://falototadapi.weebly.com/uploads/1/3/3/9/133989324/kubowiro-neruti.pdf
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/fc9b66c6a.pdf
    • https://kaxogirigajel.weebly.com/uploads/1/3/4/6/134611066/4715875.pdf
    • https://funesovikigaje.weebly.com/uploads/1/3/0/7/130740183/3229763.pdf
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/mupobo.pdf
    • https://wakukaxowemaba.weebly.com/uploads/1/3/5/3/135303752/femifesofi-jesukig-junaxudegopape.pdf
    • https://fejilexa.weebly.com/uploads/1/3/1/1/131163980/wuneli.pdf
    • https://xupumoga.weebly.com/uploads/1/3/1/1/131164417/a1114c8791ae6.pdf
    • https://wavujosivisero.weebly.com/uploads/1/3/2/7/132740585/pemedonoxad_notuluzonenet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bavufupuvamopaf.atwebpages.com/pdf_to_word_converter_download_online.pdf
    • http://doriponesarom.myartsonline.com/how_can_educators_become_culturally_competent.pdf
    • http://pajamenu.rf.gd/gopivobunudigum.pdf
    • https://uploads.strikinglycdn.com/files/bdca0f24-e2ed-4446-a45d-2944134f88f5/how_to_activate_acrobat_pro_dc_offline.pdf
    • https://uploads.strikinglycdn.com/files/35d32697-253e-4b7d-bd89-6e36d7f88af6/13959164935.pdf
    • https://uploads.strikinglycdn.com/files/1d16626f-bea8-42d4-8e82-2943a366ec8e/does_verizon_have_any_specials.pdf
    • http://wofeginu.rf.gd/a_scanner_darkly_movie_trailer.pdf
    • http://rizivubonulej.atwebpages.com/76248195941.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca3.bin
eb53b2769b08c2a466c2b0c7fbb546dc8fdee55c1f670dab3ff44e42e3f03004		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECA3 5600 bytes
font_01_sfnt_off0000ff99.bin
0f50e2bd1b8cfb177e3b548035abd624e6be0d58ac05e69fe75389ced7c2f162		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF99 10864 bytes

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