Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f276f9e95d94f17…

MALICIOUS

PDF

40.3 KB Created: 2020-10-31 18:39:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2f8d3aa348bfce1710d7c23f97b8c344 SHA-1: cc0741aa27d106444c3d88e3caf20c24e655cc33 SHA-256: 8f276f9e95d94f17a671882dcddcf87b3449a28beb0bfebe0b0c2990648a46f6
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/123?keyword=logitech+z+5300+thx'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to redirect the user to a harmful site, likely for phishing or malware delivery.

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://ttraff.link/123?keyword=logitech+z+5300+thx In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370737/normal_5f8bc99a6bb4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f8f34ccbbe52.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/1103908.pdfIn PDF document text
    • https://panirosarukiza.weebly.com/uploads/1/3/4/1/134132539/772868d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417523/normal_5f9a12b67a753.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/leguvefu/50856865538.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/wesugopusim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb899388-daec-48ff-b88a-dd41cde0846d/59371186234.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/exemple_d_avant_propos_d_un_rapport_de_stage.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5231 4716 bytes
SHA-256: f39e70516eef8169687446bd44d415e2de5afc4baf3a6df289a0e35d826e1009
font_01_sfnt_off00006267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 10656 bytes
SHA-256: f241602a40558f2f5dc05de32590ee5fa55cc51996f460f81066a4647e91c0e1
font_02_sfnt_off000086e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378