Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c870c1bd4ba80a…

MALICIOUS

PDF

48.5 KB Created: 2020-08-22 20:42:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d731a670c292c2864d393732bfcfb014 SHA-1: 2f4def32df16d71693f0e04bc29b49d8d7bad59c SHA-256: 48c870c1bd4ba80ab2b7e8c389a79fb95660581ef4cd05282508fd099b342d6c
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=allure+report+testng+maven', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'Allure report testng maven' and the malicious URL, suggesting a lure to a phishing or malware distribution site. 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.com/pify?keyword=allure+report+testng+maven
    • http://files.3dpormexico.org/uploads/1/3/0/7/130775384/gitumipowigubewen.pdf
    • http://files.firstnlrworship.com/uploads/1/3/2/7/132710722/zivuxibomasi.pdf
    • http://bifogunu.pointmountaincarpentry.com/uploads/1/3/2/6/132682076/xumolado-niven-dagumo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/46914156717.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6384/files/59921988402.pdf
    • https://cdn.shopify.com/s/files/1/0432/3944/0543/files/xijogoromewugelaxulel.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/27175730814.pdf
    • https://cdn.shopify.com/s/files/1/0438/0390/2112/files/foxerigolijawabofivanove.pdf
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/80845017614.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/estudio_bromatologico_del_agua.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/26188668300.pdf
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/kuxugirejiwonefaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/mepupexuravi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/dibifupubedapiganimovipop.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/risarafovetobowigexij.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/71439912384.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_off00006de2.bin
d27bf2c59cd81d6fcc0adc8093ae6fcacf83f7f546ee6abc56362e48159dfb6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE2 5188 bytes
font_01_sfnt_off00007f74.bin
4f7283731e5c2aac668d4fcd6486cb913d37e64c0daf483030e2d61481ff9cf6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F74 16336 bytes