Malicious PDF — malware analysis report

Static analysis result for SHA-256 035463a4fd1809d9…

MALICIOUS

PDF

65.0 KB Created: 2020-12-02 14:32:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: debab57731886a6c9c625c8d15f61470 SHA-1: 91093ff63e2126a0081ea75c3d14e109c27dae27 SHA-256: 035463a4fd1809d9585df072e6d0f927c4eb64c89e4b64b25bbd167553b2e395
154 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 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/aws?utm_term=payback+3+apk+mod In PDF document text
    • https://cdn-cms.f-static.net/uploads/4459166/normal_5fad88907c2c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394061/normal_5f9278a2e0e5f.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/208737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447669/normal_5fb3c5abafa91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_5fa78d7e8b4ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_5f9823c68a878.pdfIn PDF document text
    • https://tikepewovexa.weebly.com/uploads/1/3/4/3/134317170/vizivesivigede-pilebiv-debizezokof.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/wazagidonux/10929390957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c707444-461b-4502-9d48-59fe1cf70b87/7353866286.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0efc3b8467722f1d478d1/t/5fc4e7f2a97599144e92d447/1606739955021/trigonometria_ejercicios_triangulos_rectangulos.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/virginia_state_champion_trees.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/lowrance_hds_5m_what_can_be_used_for.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc316c9a5bc066edfb3e2e2/t/5fc554f83f75b1664384d311/1606767867857/30782548339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026a716c-483f-41ec-89e5-31da7a91b5cd/baddest_guy_ever_liveth_album_zip.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_off0000c1ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1BA 5384 bytes
SHA-256: 56613722e08f3d15912a29a9385860010eb23aff0116f6dfb50678d0b3918239
font_01_sfnt_off0000d405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD405 10380 bytes
SHA-256: 25fe197ae40be3b51f1eee0952f75168e5e4b043ef1d9329ef56def7c1c204d2

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