Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15e1217d2ef4741…

MALICIOUS

PDF

79.2 KB Created: 2021-03-15 18:24:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 60d8490e17e0d65780053c5b28fa5af7 SHA-1: 5a7024125a42bb83da7f4c6f5a2758b4109f0730 SHA-256: d15e1217d2ef47415c61a5eca48c439c4f86cb9b6570bde01fc9019412fed5df
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/strik?utm_term=myob+exo+printer+not+activated+error+code+30 PDF link annotation
    • http://pagexanomala.22web.org/85854032437.pdfIn PDF document text
    • http://mekozeka.66ghz.com/systematic_theology_millard_erickson.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://404c0e03-56c4-4888-bb84-d9d32a71a3e4.filesusr.com/ugd/100e2e_71ea1ad9b2264a60a0ef0371e51a4fa6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/bollywood_latest_movies_2018_hd.pdfIn PDF document text
    • https://4b3b4da4-1145-40fd-8a04-0ac29766dab0.filesusr.com/ugd/6c6203_5ad34144986e48a5a3e1154ac0ce4f68.pdf?index=trueIn PDF document text
    • http://jaxegug.rf.gd/vuzixigipabe.pdfIn PDF document text
    • https://d798de41-6847-46d1-b877-4f1b84f556ee.filesusr.com/ugd/3e315c_1aa6349cd90a47a1baeab11ebc50465a.pdf?index=trueIn PDF document text
    • https://61069a5e-3c5f-4884-a3c7-8c7552058b74.filesusr.com/ugd/0789d5_b89c987583f14538b57314718c7d0d69.pdf?index=trueIn PDF document text
    • http://dopisudul.epizy.com/49518541671.pdfIn PDF document text
    • https://d71fc03c-aea6-48f7-a990-8afffb22108d.filesusr.com/ugd/3de8a6_fe7179983da74434b7b32c52965d5ea6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/welanisowari/2733562193.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/nesinisaganuzuxomusekef.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/potuzezewovim.pdfIn PDF document text
    • https://f8b57e9d-e272-4783-b6f5-6420e6b93425.filesusr.com/ugd/886b73_a1eab9f19b0d47958733ccb3b39ad112.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fapaga/jepupaxapapem.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/ascitic_drainage_nice_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/gingerbread_house_coloring_sheets_printables.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/que_es_una_propuesta_pedaggica_ejemplos.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/metformin_for_weight_loss_reddit.pdfIn PDF document text
    • https://9ffa65b4-b95e-481c-977d-2cf6acaa57d7.filesusr.com/ugd/f68d46_700b168cf6ed4dd7bb7b71c9ca92808a.pdf?index=trueIn PDF document text
    • http://poxomagilunedi.epizy.com/turomexivekowakejanesefa.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/lexus_rx_350_specs_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/crochet_star_stitch_baby_blanket_pattern.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/contract_template_management_software.pdfIn PDF document text
    • https://dfabac9c-3a78-4d86-b112-ccf1750024e9.filesusr.com/ugd/b46e2f_92a4869617d848d7ad07e8f9e1676b29.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/graphite_template_regex.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e80e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80E 5324 bytes
SHA-256: e269ec34b6b0e1e0c62de7df5371630bcba9dd6e2300c4242a43aad999f0c7ed
font_01_sfnt_off0000fa3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3D 11436 bytes
SHA-256: e24099150286fa4efe8badaaa88b3518d64abe09e40e0a73cf4905ff6bd529b1
font_02_sfnt_off00012101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12101 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71