Malicious PDF — malware analysis report

Static analysis result for SHA-256 3380ad37718de0a3…

MALICIOUS

PDF

34.0 KB Created: 2020-10-31 12:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c50072f98b8966e4c7e2ccf945b505e5 SHA-1: 2295ffbd44591b629b822126ae267fa4f183516c SHA-256: 3380ad37718de0a35f03cd358d10770a5d6f9c38954597b71953e11a74e381f1
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 1.0000

Heuristics 3

  • 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?keyword=walmart+heating+pad+with+massage In PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/gunuraxed.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/a50a5de79d85ee5.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/3909083.pdfIn PDF document text
    • https://fisalusul.weebly.com/uploads/1/3/4/3/134341538/jatavalofukuba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369152/normal_5f87a87bc3d4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dbe3395-a61d-4df1-abd8-16ea76c09420/ffxiv_arm_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/ansiedade_augusto_cury_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7817386-ee63-4ca5-a192-33ace6d85f4a/dirabenenazokofaxipowokuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbf28449-f127-4d62-bb4d-b430f655144e/berodalipitavaxixukaxesuv.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/burlington_vt_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ba4d6f-c958-45b2-9ca6-756499e7178d/28329408195.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_off00004771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4771 5480 bytes
SHA-256: 0bba378a22997960df988cf7fd9c4b0e4400ffd9326b82acf53962af7947ec7a
font_01_sfnt_off000059fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59FD 9752 bytes
SHA-256: fb9fb0726c3e51146f119ee0aed03ba65deb9bcac655c8401a21b8c4452ac086