Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc293e67725bcda8…

MALICIOUS

PDF

34.5 KB Created: 2020-08-17 16:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8db2e2983372ff0aca83cdb9b17b6710 SHA-1: e71318b425a65b4b85dd44389e54470808465c00 SHA-256: dc293e67725bcda899d26190b020278dc4f463778395f34ae6fb534b928aa310
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, with one pointing to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a link farm or redirection tactic. The primary intent appears to be directing users to malicious infrastructure through these embedded links.

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=vector+background+design+free++hd
    • http://regex.harvardhic.com/uploads/1/3/1/3/131398294/5fdba46dcfe.pdf
    • http://files.maverickwellnessboston.com/uploads/1/3/0/7/130775677/folivupinugalin_bazerutuwikire_dosokarasagin_xunirejejo.pdf
    • http://files.pathspersonalfinance.com/uploads/1/3/2/7/132740277/pewixo.pdf
    • http://files.vcrhm.org/uploads/1/3/1/8/131856129/pozebunibonura.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/74397792075.pdf
    • https://cdn.shopify.com/s/files/1/0430/6481/9874/files/larox.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/57493278031.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6257/files/6th_grade_staar_math_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/2131/1898/files/mosekab.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/ap_reorganisation_act_2020_notes_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/matsu_psx_emulator_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/jatibomaferer.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/ladugeru.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_off00003fb9.bin
763b37f93f488e982ed2d30edb9ee2498110bf84d54f2e9c019e855f917e3b74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FB9 5300 bytes
font_01_sfnt_off000051b1.bin
59f0f607b6aae8ba6966a9c1d460053ea968b2f4cd2fb935e4629f1c052582b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B1 8692 bytes
font_02_sfnt_off00006f43.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F43 4324 bytes

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