Malicious PDF — malware analysis report

Static analysis result for SHA-256 857404d1de344712…

MALICIOUS

PDF

47.9 KB Created: 2020-08-07 03:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b00d9431f9856be174b1683b95fd9fd SHA-1: 12ce4be6168f8b0726acb47e40aa2ef86b363034 SHA-256: 857404d1de34471243e395da2f8d745e5a23f2f7e04fd992c1209dcefc646fc7
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious URL, 'https://ttraff.ru/pify?keyword=corel+draw+x5+shortcut+keys+list+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.
  • 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.
  • 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.ru/pify?keyword=corel+draw+x5+shortcut+keys+list+pdf
    • http://files.solcreative.co.nz/uploads/1/3/2/6/132681976/kutodonojog.pdf
    • http://gexapeniw.sweettoothtime.net/uploads/1/3/1/4/131407424/wubixogeradomum.pdf
    • http://files.1slanddesign.com/uploads/1/3/1/0/131070459/1163040.pdf
    • http://files.lavernerosephotograpghy.com/uploads/1/3/0/7/130775980/pejujuriname-tepawosolabu-fidinadamig-mamitepana.pdf
    • http://files.naranjitaflamenco.com/uploads/1/3/0/7/130739704/6f987d97.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/tofobugebewademiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9349/files/kijifunuralafubovimubafe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/konudivabepag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12509012650.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/56141696290.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/17075378572.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/enterprise_architecture_styles.pdf
    • https://cdn.shopify.com/s/files/1/0437/5874/7800/files/napoziwuwululupivasozuser.pdf
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/how_to_allocate_more_memory_to_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0434/0255/9655/files/british_parliamentary_debate_speaker_roles.pdf
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/gta_5_mod_menu_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/19978353028.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/nopab.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_off00007705.bin
ef52a91d6f416d16f40d8afc9a61cb769b9c9ef0b241853622a93f0d824704e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7705 5596 bytes
font_01_sfnt_off00008a22.bin
7f03843c0bf8fcc53362dd82d7a7fc398ada3b2dc919625ad783224967604af6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A22 12716 bytes