Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d6e68f87a57455…

MALICIOUS

PDF

150.3 KB Created: 2020-07-30 11:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cb8898bcd4b5f40d4ca6180ae082a7b SHA-1: 56bb9cc681595ef5a187f3b2d9d38eeea37066a9 SHA-256: 72d6e68f87a574550babcba4a2174678d338f429c004b1deebf5b2ad17b69557
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised as a document summary. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to redirect the user to a phishing or malware distribution site.

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.com/pify?keyword=agenda+21+resumen+por+capitulos+pdf
    • http://files.natasharavinand.com/uploads/1/3/1/6/131607810/joraperalijobe.pdf
    • http://files.whmercantile.com/uploads/1/3/1/6/131637190/dovube.pdf
    • http://files.willowshealingpath.com/uploads/1/3/1/4/131407080/zoxoteg.pdf
    • http://files.scriptwriters-houston.org/uploads/1/3/1/4/131438571/5edaf4895650ebe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/loriradulobag.pdf
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/75601216809.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/43721056537.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/81234368192.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/tenozakotokifebeto.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8744/files/bebobisife.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/50362185328.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/savopenijuwumilidogijop.pdf
    • https://cdn.shopify.com/s/files/1/0434/8080/9625/files/60944611645.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5688/files/lulejojiwobuxuzaxidexu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/7942481159.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekerumukin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/27441079004.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/roxanugesuzilun.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020f7a.bin
2e1801aac38274e33a70cdd25297842a15c868c9798084ba7bd3f61a301bebb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x20F7A 5528 bytes
font_01_sfnt_off0002222f.bin
75ce79036f7a0aee8d7b4550ed65687aceba4a8cde492f71d8a36db4f78879e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x2222F 11964 bytes