Malicious PDF — malware analysis report

Static analysis result for SHA-256 af111b8238a1b378…

MALICIOUS

PDF

40.8 KB Created: 2020-08-30 19:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a81145c681cc1ced4a529e18641a358 SHA-1: 6a80fc9e64c720ca9b88b7cf616a97b627f6b415 SHA-256: af111b8238a1b3786b22db868e59530c905b0902c1b52a32398e3f2e54b32a4f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. One of the embedded URLs, 'https://ttraff.com/wix?keyword=sabre+red+workspace', is flagged as a known malicious redirector. The presence of numerous links suggests an attempt to either manipulate search results or redirect users to malicious sites, potentially for phishing or malware distribution.

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/wix?keyword=sabre+red+workspace
    • https://cdn.shopify.com/s/files/1/0433/7441/1926/files/vugomubasujojofeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/6366/5055/files/xexebalapubuza.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6284/files/jesafuxub.pdf
    • https://cdn.shopify.com/s/files/1/0438/6275/3445/files/levantada_de_cruz.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/13914752217.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9021/files/juwanuzisuxefavenam.pdf
    • https://cdn.shopify.com/s/files/1/0432/3419/7666/files/apprendre_le_franais_en_s_amusant.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/pegaliforabukij.pdf
    • https://cdn.shopify.com/s/files/1/0462/3899/0485/files/formal_house_offer_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/book_cover_page_design_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/4513/3215/files/arupu_audio_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0457/7152/2214/files/assimilate_imdb_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/34388141824.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_off00005df4.bin
0644f6171b8edeedf569831874be99853e52482bbba93b2a49e9f12ce4566ca2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF4 5432 bytes
font_01_sfnt_off0000708c.bin
b51bd84270a30d8453ea18402987c6e2730f907e0fd8f86307b0ba50fba0feb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708C 11292 bytes

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