Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa860946791a1115…

MALICIOUS

PDF

42.3 KB Created: 2020-08-21 08:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d422eef4356b52985f2ad5c368e9eba SHA-1: 5d35cf63788979fae761263b21d6e431fea172ef SHA-256: aa860946791a11153723b1d042ec2888a82011277a6d680e0d07fae8311447f1
128 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=pl+sql+developer+format+code' which is a strong indicator of a phishing or scam lure. The presence of numerous PDF links, many hosted on Shopify, suggests an attempt to leverage SEO or create a deceptive appearance of legitimacy. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pl+sql+developer+format+code
    • http://files.piccoloartista.com/uploads/1/3/0/7/130739155/jotuliboxipaza-suwafike-zoladujotoruzuz.pdf
    • http://pegin.rotarykimberleysouth.club/uploads/1/3/0/8/130874384/belalofitarusew-muxifemazum-savokunu-duvonazetig.pdf
    • http://files.nspl.info/uploads/1/3/0/8/130874067/8177530.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3521/files/different_types_of_intellectual_disability.pdf
    • https://cdn.shopify.com/s/files/1/0435/4700/0983/files/12769460603.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/laruruwoxopez.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/11666203833.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/pajesibinosawibisato.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0471/files/64970126164.pdf
    • https://cdn.shopify.com/s/files/1/0432/4252/0739/files/sopadavizidonizonaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/3347/5737/files/juwotetowowinesojetit.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_off0000675f.bin
9a10ac9e27b0b47f4968235ae57a015c4eeef846fc2e3537ff6008a2a55cc36c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675F 5488 bytes
font_01_sfnt_off000079f5.bin
dbd5e36f4a298aa7fb6e210fabccbcb79b254ce4e611aa19aca75b704ac1aaba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F5 10144 bytes

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