Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aabfccfc8d8f6d5…

MALICIOUS

PDF

44.5 KB Created: 2020-08-21 17:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 878c2ecc939f0ff4c97e36be2ce19a7d SHA-1: eef2bc64fa1e5cdba53aa9de4310dcba1deee216 SHA-256: 1aabfccfc8d8f6d5279d8e7cbbd00e4a50d1d3132362779c2057537d4c798f21
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous embedded links. One critical heuristic flagged a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=greek+chicken+thighs+sheet+pan'. Another critical heuristic indicated a PDF link farm with 14 external links, many hosted on cdn.shopify.com, suggesting an attempt to distribute or obscure the final malicious destination. The document body contains garbled text but includes the same redirector URL and several Shopify URLs, reinforcing the link-based attack pattern.

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.ru/pify?keyword=greek+chicken+thighs+sheet+pan
    • http://files.braziercoffeeroasters.co.uk/uploads/1/3/0/7/130776205/7a15ce.pdf
    • http://momejowo.eastlakecongregational.org/uploads/1/3/1/6/131637836/nawomiwe_xabilusiz_wegedewisazama.pdf
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/35758200029.pdf
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/fusionner_entre_eux.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/jasofiwavowude.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/wemelepagumonabu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6529/3462/files/infecciones_por_adenovirus_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0429/7064/4631/files/44702413108.pdf
    • https://cdn.shopify.com/s/files/1/0444/0896/3238/files/small_to_word_converter_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/59032611064.pdf
    • https://cdn.shopify.com/s/files/1/0433/6769/4487/files/abrar_ul_haq_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/7339/5101/files/degomokuxesevo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/8296099012.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/letuwotubenojedigazaminum.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_off00006d3c.bin
610ceae2a6fbd564234fd437fafc8ea4fa7c829310c2b2feb2a9ff1d16db6bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3C 5260 bytes
font_01_sfnt_off00007f21.bin
590a977d269203081724a42bb65521970c397720e7468f0278654c01897e24b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F21 11340 bytes

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