Malicious PDF — malware analysis report

Static analysis result for SHA-256 26547b48c742527d…

MALICIOUS

PDF

59.6 KB Created: 2020-08-08 22:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 037d0df6f2b8e2c0118b572f40e1643f SHA-1: 55acf405bdbdf0c3e25f134188d5e44445df734f SHA-256: 26547b48c742527d63ce5d12c0993c19cf2a6afd165152c3e458b94906f34514
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'air suspension system advantages pdf' and the URL 'https://ttraff.cc/wb?keyword=air%20suspension%20system%20advantages%20pdf', suggesting a lure to a malicious site. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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.
  • 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.cc/wb?keyword=air%20suspension%20system%20advantages%20pdf
    • http://files.soundwavescape.com/uploads/1/3/0/9/130970022/mugozegi_bowabugubawu_panimutivag.pdf
    • http://files.thecolorboxbymaria.com/uploads/1/3/0/7/130775435/kegusew.pdf
    • http://files.balancedtouchmt.com/uploads/1/3/1/8/131856476/setunoleruxu.pdf
    • http://files.flowersbyjaga.com/uploads/1/3/0/7/130738675/solotapez.pdf
    • http://files.pregnancybirthbeyond.net/uploads/1/3/2/3/132303270/2b2fb4e8f.pdf
    • https://cdn.shopify.com/s/files/1/0430/2484/2906/files/sudilonifilujujoxibobog.pdf
    • https://cdn.shopify.com/s/files/1/0433/4210/2679/files/budget_2020_highlights.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/guvuzufamurakuwuros.pdf
    • https://cdn.shopify.com/s/files/1/0439/2786/3464/files/56334722073.pdf
    • https://cdn.shopify.com/s/files/1/0435/3874/3450/files/60574124663.pdf
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/tofawuturekipijin.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/cub_lowboy_154.pdf
    • https://cdn.shopify.com/s/files/1/0435/4582/1333/files/zodozezijemugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2479/3245/files/entrepreneurship_business_plan_notes.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/logical_framework_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0434/4804/1637/files/85270488150.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gasowezigubufavowi.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/
    • https://cdn.shopify.com/s/files/1/0430/24

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ab11.bin
70a224e0926d208d35abc5bc7c19da33dbb2d4383e67cd8da8df6bb2d64f8da6
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB11 5480 bytes
font_01_sfnt_off0000bdb2.bin
f8626e2e16de545aa44bbef5f09633b2724c753735a126eed60caeb91ea75426
pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB2 10376 bytes