Malicious PDF — malware analysis report

Static analysis result for SHA-256 863f9ab6ec35f098…

MALICIOUS

PDF

45.2 KB Created: 2020-08-02 02:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d93636734b5d8b07b7f52ab3e227f80 SHA-1: 5b3d19c89021f56d9c727b08915f32a5d418c436 SHA-256: 863f9ab6ec35f098749acfe6461eccf597f6079de4996104e1dc1ff41e45bd8c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to 'US steel contract talks 2015' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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=us+steel+contract+talks+2015
    • http://files.tcsprek.org/uploads/1/3/1/8/131871849/rotiz_busezuneravefeb_nekenivenedulud_livijemeko.pdf
    • http://files.mariettasquarefarmersmarket.com/uploads/1/3/0/7/130740571/xiwekodamad.pdf
    • http://files.cohesionengineering.com/uploads/1/3/1/4/131453636/vizux_retanidavamum_rosurabudefizot.pdf
    • http://files.exeterunitedchurch.com/uploads/1/3/1/4/131453498/mikewekutebawiko.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/53849942601.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kividerinogofigizunewif.pdf
    • https://cdn.shopify.com/s/files/1/0434/7166/7352/files/zeduzopobivemadijexat.pdf
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/vuzenimumitudedukosirag.pdf
    • https://cdn.shopify.com/s/files/1/0435/2842/1528/files/kepodelobokobod.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/68326196315.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/dapidepazotojobi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/govegozuri.pdf
    • https://cdn.shopify.com/s/files/1/0429/2801/3471/files/4436386509.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/xunageger.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/41863287849.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/rofowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/nodebetevudubedetubo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3453/3275/files/gijubusuvumupot.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_off00007113.bin
932ae4c3c022a2d7616588389d7201a6d7fa5aa4e9b390324ae386ed6572d789
pdf-font-stream PDF embedded font (sfnt) at offset 0x7113 5300 bytes
font_01_sfnt_off00008332.bin
0b806cd0f076a4be515e7b4f80397f13a24131490ef85c365fba11c5910529e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8332 10700 bytes