Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f2ea9d10d1b2cb…

MALICIOUS

PDF

66.2 KB Created: 2020-12-19 22:37:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6ba117545469f786ea7218835fbe2d19 SHA-1: 283f470d4f542426db46dcceccd1cfdf62a79964 SHA-256: 82f2ea9d10d1b2cb3ca4adc230c7c12542484e8abef17d043160db1a0e372ca8
154 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 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 0.9998

Heuristics 4

  • 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.
  • 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://cctraff.ru/aws?utm_term=acer+aspire+4750g+bluetooth+driver In PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/jolino_fujiba_lokowupijava_vebime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386595/normal_5f99410c24619.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/2742576.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_5fd887a3d5bcb.pdfIn PDF document text
    • https://tugoxalimirufa.weebly.com/uploads/1/3/4/3/134310877/tezasababaz_gagimax_wutedavusizuze.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/f71a1c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392442/normal_5fb2e95f5aa92.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/bejenosugede/jubilost_pathfinder_kingmaker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a8f2e2-4bce-4694-8c4c-7131c102ccd8/lowupagabipulama.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/23231549414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ef0a866-10d9-4b74-9cc3-2b14a8d2d962/where_were_you_yesterday_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/visio_2019_software_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC12E 5956 bytes
SHA-256: 0a2b986c3e88ea5bb8126bd09c70d8c375f4f1ea7e15be8f7978ba12599f7329
font_01_sfnt_off0000d57f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57F 11044 bytes
SHA-256: 312fa9fe259548ee5866f6d64012c7c885b57f7353c6af81833b7d2a386818da