Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42f3c3d95f69f77…

MALICIOUS

PDF

37.6 KB Created: 2020-08-10 14:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54140e751d9864a68966efa13523f3cc SHA-1: ffe0a20e2a4423b5a5100a186adc899b9802d799 SHA-256: e42f3c3d95f69f77e5e949f7a1bb7ad3de2fbe334c05fa9b437dda34117cd368
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, designed to appear as legitimate resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=alphabet+letters+with+pictures+for+word+wall+pdf'. This suggests the document is part of a link farm or SEO poisoning campaign to drive traffic to malicious sites.

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/pify?keyword=alphabet+letters+with+pictures+for+word+wall+pdf
    • http://files.simleybasketball.com/uploads/1/3/0/8/130873908/talobexabodi.pdf
    • http://files.cupe822.com/uploads/1/3/1/1/131163777/kiwesoviw_sorifome.pdf
    • http://files.tradewindsroofingsc.com/uploads/1/3/1/1/131163533/defalo_dubofifu.pdf
    • http://files.lakesideranchandresortfl.com/uploads/1/3/1/3/131380771/bakuxesof-zabusof-joxawem.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/kisijalofebesimix.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/pibas.pdf
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/beperafo.pdf
    • https://cdn.shopify.com/s/files/1/0444/2567/4919/files/psicologia_de_la_emocion.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/24162455400.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/95779701860.pdf
    • https://cdn.shopify.com/s/files/1/0432/7204/4697/files/negative_exponents_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/tasovepepunosudisulafipip.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2630/files/cambridge_beginners_english_test_pdf.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_off00004730.bin
c7e201e5931dafeaeb382d8a84b4202f1236ef1f8405a41076c21c465e5158f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4730 5240 bytes
font_01_sfnt_off0000591c.bin
2873158263a900d8896ed7b43431af1715b66138f6b4ef51b2e7777334b9e41b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x591C 10016 bytes
font_02_sfnt_off00007b6c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6C 4324 bytes

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