Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0933510e7b82b25…

MALICIOUS

PDF

47.6 KB Created: 2020-08-05 15:02:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff5afa651fe9aeddddeb8a5f58dfcb40 SHA-1: b53a2c541f36d7b0bb50232a15aa760663eae027 SHA-256: f0933510e7b82b25d8eb1c78ee13b268b425dd13251f448e2c857a307ab6fdad
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is `https://ttraff.ru/pify?keyword=simone+de+beauvoir+feminismo+pdf`. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, suggesting a link farm or redirection scheme. The presence of multiple Shopify URLs, some confirmed benign and others unknown, indicates an attempt to blend malicious links with seemingly legitimate ones.

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=simone+de+beauvoir+feminismo+pdf
    • http://files.veingoods.com/uploads/1/3/0/7/130775952/jajipe.pdf
    • http://files.jenniferjoseph.org/uploads/1/3/1/8/131856852/relutelofapalejuzoz.pdf
    • http://files.jimmybeanscoffee.com/uploads/1/3/0/8/130874162/732429.pdf
    • https://cdn.shopify.com/s/files/1/0443/8904/0294/files/chez_nous_4th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/jepijiwejon.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/lowes_mountain_home_ar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/38679564852.pdf
    • https://cdn.shopify.com/s/files/1/0433/0094/6073/files/53395530374.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7246/files/propiedades_quimicas_del_bicarbonato_de_sodio.pdf
    • https://cdn.shopify.com/s/files/1/0429/1179/3315/files/61341810862.pdf
    • https://cdn.shopify.com/s/files/1/0437/5481/5640/files/dejemojiridizinose.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/48430133075.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/abba_happy_new_year_satb.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_off00007c7e.bin
15c9f3f71c31e1284d289661357b001a1c0c7b02496c083730e28afbdb2549cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7E 5456 bytes
font_01_sfnt_off00008ef7.bin
3c27bf304c6ccdce108c17c3037804ea94daf78dfa4b17b74623ad49a0471a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF7 10360 bytes

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