Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b396402dd9bf567…

MALICIOUS

PDF

38.7 KB Created: 2020-08-11 08:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 936d8d54c3f3a266cee9d3b65b80061c SHA-1: b7ad864bad5df30d65746fd088bcd00bbe3a32c0 SHA-256: 1b396402dd9bf5670696068806d6e1cbe7462016622810a40f945e9c65107d39
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=jurnal+internasional+akuntansi+manajemen+pdf, suggesting a lure to download a file. The presence of numerous links to Shopify domains, some marked as benign, alongside unknown and potentially malicious domains, indicates a sophisticated link farm designed to obscure the ultimate malicious destination.

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=jurnal+internasional+akuntansi+manajemen+pdf
    • http://setafi.indianlakestables.com/uploads/1/3/2/7/132712207/gizadobogugilutoto.pdf
    • http://files.biophysical-ecology.com/uploads/1/3/1/4/131406356/xivut_girusidusowele_finusagon.pdf
    • http://lezibexu.larcomair.com/uploads/1/3/0/8/130874474/8527518.pdf
    • http://files.yellowstoneartboutique.co.uk/uploads/1/3/2/7/132740541/914458.pdf
    • http://files.marthaclaytonlinguist.com/uploads/1/3/2/6/132681516/959ea73ae1f2c.pdf
    • https://cdn.shopify.com/s/files/1/0431/2835/7020/files/mac_address_prefixes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9132/files/baldwin_giovanni_s_room.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/44783745069.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/tezavivilagegenopomebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/66324806212.pdf
    • https://cdn.shopify.com/s/files/1/0437/1401/9496/files/49003912184.pdf
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/e2_80_9chirschtalc_e2_80_9d_cream.pdf
    • https://cdn.shopify.com/s/files/1/0440/5752/6437/files/the_beatles_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/attachment_theory_handout.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/jisufukuguvub.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/38182608207.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/75318610740.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/nitowaromisiboniki.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/sri_venkateswara_suprabhatam_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/pamagomuxafavalokobo.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_off00004d3d.bin
02217703ca562c0dabc811035005437fa1d6614ff51f7fcc888756081dfd4d4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D3D 5196 bytes
font_01_sfnt_off00005ed0.bin
9a06cbba39683ba5d2055f58088a2ba4996568259b3689e0ce6d1234cd606c1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED0 9496 bytes
font_02_sfnt_off00007f1e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1E 4324 bytes

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