Malicious PDF — malware analysis report

Static analysis result for SHA-256 30bd5bbc875265ca…

MALICIOUS

PDF

74.6 KB Created: 2021-03-10 02:26:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 175f61295c1ef4d275192d12d800944e SHA-1: e796e959128d6aa9ec20a42d7414dbf2b3e0c3bf SHA-256: 30bd5bbc875265cad3d7bab9c93223aa8ab53b7ca6c2a94de25835d1a940f124
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 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=oxidation+of+alcohols+organic+chemistry+pdf PDF link annotation
    • https://mifurujuxix.weebly.com/uploads/1/3/3/9/133997148/gerur.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/DihBgeZ/cover_orange_level_2-_36.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/jjcheih/mine_rescue_level_17-_2.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/xamapufawur.pdfIn PDF document text
    • https://tezilejesitox.weebly.com/uploads/1/3/1/1/131163634/disima.pdfIn PDF document text
    • https://cdn.sqhk.co/bufudoraxala/ugjnTPD/teddy_roosevelt_national_park_south_unit.pdfIn PDF document text
    • https://vogitoroxubas.weebly.com/uploads/1/3/0/7/130739894/zoxet.pdfIn PDF document text
    • https://tesajezu.weebly.com/uploads/1/3/1/4/131452821/1914120.pdfIn PDF document text
    • http://retamos.mygamesonline.org/chicco_liteway_stroller_manual.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/2063716.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/jfHovij/48815255314.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/python_while_loop_list_length.pdfIn PDF document text
    • https://kixefumikek.weebly.com/uploads/1/3/1/4/131437490/zijokexolunewin-fiduxaw.pdfIn PDF document text
    • https://mafadojidakiwo.weebly.com/uploads/1/3/1/8/131871721/kepopumowej_webubetabu_nufibutenab_farogafukafew.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/jhbaFjj/reversi_game_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/bghijib/7893530272.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://684917c6-b594-4497-9ea4-141105166a5b.filesusr.com/ugd/0dc9f5_83197633a2594dab8f50b3076232481f.pdf?index=trueIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_6a31745de31a42469820603dc261000d.pdf?index=trueIn PDF document text
    • http://wurebosuloxu.myartsonline.com/62466300365.pdfIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_f936c87f89d047d4a4554508bfe1b42d.pdf?index=trueIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_429471b489864215825bd8211b60bcbd.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE608 5764 bytes
SHA-256: 52cb02740d7fbc03134d0f46dffe2abfce9ff495354830db86d672ca389a8eb0
font_01_sfnt_off0000f98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98E 10304 bytes
SHA-256: fa6ade1f367bfefc06ed95c034929903be29ac926b8265b355b26baeb2acefaf

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