Malicious PDF — malware analysis report

Static analysis result for SHA-256 574ae07c62e4bd96…

MALICIOUS

PDF

40.6 KB Created: 2020-08-12 12:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9b0a10d2ebb8cc79875a86cfe7580df SHA-1: 7604fbfa2cf7cb0713001db1c49d00931094b97a SHA-256: 574ae07c62e4bd966d5908793e2bf8f68d2db26fa7e81cccf35ab51f75bc43bb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=australia+political+map+pdf+download', suggesting a lure to download a file. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.cc/pify?keyword=australia+political+map+pdf+download
    • http://files.sproutparentcoaching.com/uploads/1/3/2/8/132815343/2859277.pdf
    • http://files.learninglandscapes-frlt.org/uploads/1/3/2/6/132681579/mavuganudepiv-kusowekabelat-mokusexasokuni.pdf
    • http://files.diamondpeaksalt.com/uploads/1/3/0/7/130776401/6509445.pdf
    • http://talesexar.jasminanedanovski.com/uploads/1/3/1/4/131406687/dareleteluw-revisejojivoji.pdf
    • http://files.tellncallmobile2u.com/uploads/1/3/1/4/131453967/xamidorukupow-doderofokurevan-dejedus.pdf
    • https://cdn.shopify.com/s/files/1/0434/0246/1351/files/tvpad_dns_code.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/just_play_bridge_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/devunetudedituti.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12509012650.pdf
    • https://cdn.shopify.com/s/files/1/0439/4090/5128/files/tecnologias_de_la_informacion_y_comunicacion_1.pdf
    • https://cdn.shopify.com/s/files/1/0435/4516/5975/files/division_worksheets_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/92600906461.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/32060308048.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/12721940415.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/rewena.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/mimobobuxotukora.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/57594027841.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060cd.bin
d7eccfbc6a1f2fb75c85b4c16a1703df6523cc3c80d71bca056482707a6de4c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x60CD 5384 bytes
font_01_sfnt_off00007310.bin
dbe4ed4f0151697fca1186d555a185266d1424a6b51b208e4c5668d18700b4b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7310 10048 bytes