Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b6a954c17ee20cc…

MALICIOUS

PDF

44.3 KB Created: 2020-11-06 23:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a7cb4aa079a04999260d1297e44f32f4 SHA-1: dc4b668b9c41a949b04a7517c5e1cbfc22068add SHA-256: 3b6a954c17ee20cc230b8b7d7eaa66eb79ab7d25499191518b6d8408c6403c6a
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://traffmen.ru/123?keyword=holosun+hs403a+review In PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/botisipizuz_supixikikijowa_kabexodonu.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/6847911.pdfIn PDF document text
    • https://debekekuwafa.weebly.com/uploads/1/3/4/4/134473288/rosafifabimolul.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/mukutud/daisy_red_ryder_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/blackmart_alpha_pro_apk_no_ads_mod_june_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/anesthesia_complications_in_the_dental_office.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/802ce959-b9ac-44bf-9ef4-77cd17ec6315/loxetawanogenulotewuviso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fc79969-2205-4a72-8a74-62186650b9c9/yakuza_0_patch_fr.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/lamp_2020_conference.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc43165b-093e-423a-a9f0-93daedcaa34c/44916617477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57710f65-546a-4897-8aea-7a768249a8d3/mafojazerugeliwefoj.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/l_affaire_calas.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/65461478250.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/lightly_row_violin_music.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_off00006d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8F 5280 bytes
SHA-256: bfeceb864fbfcaa30b4809e7a86142ea50c9963cdca4e58b959bff73836d1905
font_01_sfnt_off00007f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8F 10884 bytes
SHA-256: e3bea9b91cc38626c2de3fa56a3effc96a9e72d5e7b20bbb788b03b3025257e0