Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba67d88570dd628…

MALICIOUS

PDF

38.3 KB Created: 2020-08-25 06:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ce0cf49028737a095b5a17c07dbb163 SHA-1: 5d0e57098a17f4840f7baa51f3a8ee746a6e00ac SHA-256: 3ba67d88570dd6289813d5194ba97c9b239318c6a05726a5432cde8fdb13929a
120 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on platforms like Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, suggesting an attempt to lure users to malicious content. The document body itself is heavily obfuscated and contains the malicious redirector URL, indicating a likely attempt at SEO manipulation or a phishing lure.

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=estelite+asteria+clinical+guide
    • http://files.alisonpcampbell.com/uploads/1/3/0/7/130775304/weseso.pdf
    • https://cdn.shopify.com/s/files/1/0439/1891/7787/files/24318894944.pdf
    • https://cdn.shopify.com/s/files/1/0429/3830/2627/files/synthesis_of_esters_lab_report_answers.pdf
    • https://cdn.shopify.com/s/files/1/0441/2017/8840/files/coleman_powermate_compressor.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/jurnal_pneumonia_pada_balita.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/differential_topology_pollack.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/79450258784.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6042/files/karuppasamy_dj_remix_songs.pdf
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/6530842072.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_off000058a1.bin
fb1475116c5d13c56fc17882da15eaa50857477ee46bf04871b3c1b2c7e7f7dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A1 5064 bytes
font_01_sfnt_off000069dc.bin
0cdc9ac2a8b0aff891f643dda6f5dde726b8a335b7faa3af433f96c2a0bb4df6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69DC 10280 bytes

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