Malicious PDF — malware analysis report

Static analysis result for SHA-256 007546e8c685a67e…

MALICIOUS

PDF

84.9 KB Created: 2020-11-26 02:26:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 11a72b43cb50e1c67c688fccfaa16fcd SHA-1: b67525c2c2c59234be1ad1dde95f889349423ee9 SHA-256: 007546e8c685a67eb50eaca340a16c1ef7fee5ebb2ddbeb028cb171284906c09
214 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/strik?utm_term=wolf+of+wall+street+netflix+123movies In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f8749cd0ad9c.pdfIn PDF document text
    • https://nefolebar.weebly.com/uploads/1/3/4/4/134400051/sodipezokom_rotuda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_5fa7626cb6935.pdfIn PDF document text
    • https://lepitosamodovax.weebly.com/uploads/1/3/4/3/134335454/bojug.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/faveburinezigas_dadel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485299/normal_5fb6cb32999de.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/farururobukuxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455894/normal_5fa76925dcc79.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/jadere/bihar_board_10th_routine_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/lanowilovuviwib/76946419033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8631f83e-f411-4e03-bc7d-0d0c1cf69b97/72372438072.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/dasegapijuxitam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa660546-e134-467a-87ba-3ad964e1b03b/pharmacotherapy_casebook_a_patient-.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/zojifegarajusuf.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE01 3020 bytes
SHA-256: 7202e89f9097b72fb3e0aa25e21160d72ad7fb4fa5ce45806a3f0706654290fa
font_01_sfnt_off0000d8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C6 5496 bytes
SHA-256: 6f1e37fc0a1da941e53808ab0b3bcd286460656552ab5de5d925d9b9dfad87c4
font_02_sfnt_off0000eb46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB46 6360 bytes
SHA-256: fe2612ac4e14357ea056201dc77233e50074a9af8935dfc7619fdaa00c7a2d48
font_03_sfnt_off0000fae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE5 12564 bytes
SHA-256: d20223b0980463f84590ed8316ea454b5c4deb27c9b73bb1650ac1272ebc4eb9
font_04_sfnt_off00012418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12418 19496 bytes
SHA-256: d4a91058444d257474a824779bfaca79113d4103ae96c29ea7decf87ef4a9e3c

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