Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7a99fe18c90509…

MALICIOUS

PDF

50.0 KB Created: 2020-08-25 17:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a27186e777ac5f329fc3031ab97b269a SHA-1: 8c6d6fdbf1bccae9303c10814788e38ed424a73f SHA-256: ab7a99fe18c9050908117cfc96236d6d33d4f1f81dffbdf9195a5ec2362f2849
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on platforms like Shopify. The document body, though heavily obfuscated, contains the text 'Bleacher report raw live' and the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted from this sample.

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.com/pify?keyword=bleacher+report+raw+live
    • http://sovajil.hooligansgp.com/uploads/1/3/0/7/130738854/nonika.pdf
    • http://files.thechurchwithamission.com/uploads/1/3/1/3/131384643/bekoferugenidifu.pdf
    • http://files.buffalocommonspress.com/uploads/1/3/1/4/131407214/9728085.pdf
    • http://files.antoniosajid.com/uploads/1/3/0/8/130814682/jogojafovewerox_zunezuxotejo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/befagizatubunezomu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/wurisosuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/kim_k_game_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0432/0165/9043/files/mizuluzidegafufinizorupi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/tutafezitareponu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/xenatipemezivesovogowewu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4388/0093/files/82051372088.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/statistical_inference_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/5955/9065/files/midijemizeselegaxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/0652/3552/files/wotovuter.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/fajagejinupevutugew.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/dipivedowu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2526/8889/files/derasonuxigaj.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_off00008688.bin
cf34810d16bee63b7a036f62611ea86dd1408e349ad465cff070db33a2b2f2fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8688 5044 bytes
font_01_sfnt_off000097bd.bin
22ca8eefd03aadc1e53d2c3ac4fe5a16b74a9a308f914f6c5b8fd920ac35f0b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x97BD 10240 bytes