Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da15cef2c9f53d5…

MALICIOUS

PDF

70.6 KB Created: 2020-11-25 15:05:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a715d2d14da91f477d7674ce9012a8b SHA-1: 7160a19310da85d4369952a9c6b4ab3d2c1d41b1 SHA-256: 7da15cef2c9f53d5873513cbeac2cb25ab7cb56642a0b651952001c501e456f6
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=chambersburg+pa+police+reports
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://s3.amazonaws.com/lorifumofelu/parts_of_the_duodenum.pdf
    • https://uploads.strikinglycdn.com/files/db792795-159b-45b0-8a99-4749f2eba447/leatherface_3.pdf
    • https://s3.amazonaws.com/dozuga/adverse_drug_reaction_adalah.pdf
    • https://uploads.strikinglycdn.com/files/c5105efe-9cba-4dcc-ab34-562d64e1da8a/foxifaxevukikafejixi.pdf
    • https://uploads.strikinglycdn.com/files/6d5adff4-583e-4af5-b218-fdcff7426110/dave_ramsey_fpu_workbook.pdf
    • https://s3.amazonaws.com/kigavanus/parliamentary_system_of_government.pdf
    • https://uploads.strikinglycdn.com/files/4878daa3-cbe6-4f14-b517-f301886f6b3d/que_es_la_ciencia_formal.pdf
    • https://s3.amazonaws.com/gixawetopoli/34606816867.pdf
    • https://s3.amazonaws.com/pululusodogi/18302106468.pdf
    • https://s3.amazonaws.com/likadojivivofu/16296271252.pdf
    • https://uploads.strikinglycdn.com/files/f35a960a-f921-470c-9964-a9839e596b4c/kogujuguk.pdf
    • https://uploads.strikinglycdn.com/files/ca179dc1-9b3f-4c2d-9715-20d2c22aa11e/81109103901.pdf
    • https://s3.amazonaws.com/luramamelolem/archaeological_sources_of_ancient_indian_history_in_hindi.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c368.bin
abf4626c985ce69c14ad4542a5477a8229c51e4cbf7ca21510727135ad015a7c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC368 5392 bytes
font_01_sfnt_off0000d57f.bin
d4690de24fdc9095afc71314d959c54ad98e34207aff9c6e67f2f681c20655aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xD57F 7896 bytes
font_02_sfnt_off0000eb31.bin
681008c79fa603ddbca21fd8e01f075147599007192d1478440897e60eb73850
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB31 10096 bytes