Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae078a72f53d11c…

MALICIOUS

PDF

44.0 KB Created: 2020-08-26 00:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdc4555c3712c499a6e0382abd73a6de SHA-1: 81b1d73e6424981cab3bdf28511388fc8dda9aa5 SHA-256: 1ae078a72f53d11c7f04af63823ff5ee6058acc1ba697c3f6d8feb463002d04e
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to a 'ficha tecnica pdf' and includes the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to attract search engine traffic, with the primary malicious link being the redirector. This indicates a phishing or scam attempt.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=kia+rio+sedan+2020+ficha+tecnica+pdf
    • http://files.zoelewisphotography.com/uploads/1/3/0/8/130814758/baxaserana.pdf
    • http://tefixa.primaterrafarm.com/uploads/1/3/1/8/131857247/jopig.pdf
    • http://tavuzu.yorktonfarmersmarket.com/uploads/1/3/1/4/131409310/53e493ddb4.pdf
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/67946713983.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/icao_annex_7_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/munanufawazoruzozowifoga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/30331061649.pdf
    • https://cdn.shopify.com/s/files/1/0431/5522/6773/files/kalabhairava_ashtakam_lyrics_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/qigong_breathing_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0439/4500/1115/files/troy_bilt_super_bronco_tiller_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/national_standards_for_safer_better_healthcare.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ffb.bin
72ca9ff4a84cf604b0e0fcaa9ee814d311411d4eeeb3d4637da1e78397f76479
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFB 3652 bytes
font_01_sfnt_off00006d2e.bin
dd66c4064c18c9380380ee7d25fb0459961a5675aa1cd38905ec9a4a6e0e45cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2E 5456 bytes
font_02_sfnt_off00007fb4.bin
e85159ae18a6735f7190a26220ef1d7f613d4ddd186eaa46c033e626b23b78b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB4 10304 bytes