Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba5c231c285de2d…

MALICIOUS

PDF

61.5 KB Created: 2020-08-28 11:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dae02a77185762a33f7946a5627b4f4 SHA-1: 2885859263ecfdf25e71bb2a1849db2f97357cac SHA-256: dba5c231c285de2dc77b5ea2444b57586a00925e4acc438416343bb03fe9a18e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for a PDF link to a known malicious redirector. The document body also contains the URL 'https://ttraff.ru/pify?keyword=asus+x555ya-+rb81-+cb', which is likely used to redirect users to malicious content. The presence of numerous links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute malicious content.

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=asus+x555ya-+rb81-+cb
    • http://files.momentsbyannephotography.com/uploads/1/3/2/7/132710676/lemuforita_zavedu.pdf
    • http://pesadari.justusgirlsmp.org/uploads/1/3/1/3/131384401/6694126.pdf
    • http://fatuz.christiangreenlmt.com/uploads/1/3/2/6/132680981/5244080.pdf
    • http://files.katrinamoorebooks.com/uploads/1/3/2/6/132695578/saxofawabu.pdf
    • http://files.chrisdufala.com/uploads/1/3/2/3/132302735/pisibejoraxog.pdf
    • https://cdn.shopify.com/s/files/1/0429/9256/6435/files/replicate_function_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0441/3983/9640/files/mazitidul.pdf
    • https://cdn.shopify.com/s/files/1/0433/5383/3637/files/92489227106.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/the_certified_quality_technician_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/saints_row_2_money_cheat_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/15382257410.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/56851921540.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/lifevabamadixugisalam.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/philip_glass_echorus_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/4147/9066/files/bufetiburaweporujixaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/84327405091.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bb8.bin
ab8865a287882204f68961bce0d368b80d07be426ae0475cf73144c845810e0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB8 4880 bytes
font_01_sfnt_off0000ac69.bin
90e74816e0d45aef6c68f032feaa9292eeab0cc7171c0f2557ae0c6b93459147
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC69 14828 bytes
font_02_sfnt_off0000daca.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xDACA 4324 bytes