Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2b9a5590f86730…

MALICIOUS

PDF

45.3 KB Created: 2020-08-08 17:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54da884ce45880fa70523ac772d28151 SHA-1: 949c0b63effc8c3199ecb95dd19c117bebb11308 SHA-256: ad2b9a5590f867305ffeee11df5a6afd8db59ae045e57179b7796709ca04f287
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains text related to 'Harvard referencing style pdf download' and includes the malicious redirector URL, suggesting a lure to trick users into downloading malware disguised as academic material. The presence of numerous external links, including those hosted on cdn.shopify.com and other file-sharing domains, indicates a link farm designed to attract search engine traffic and distribute malicious payloads.

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=harvard+referencing+style+pdf+download
    • http://files.massoutrage.com/uploads/1/3/0/7/130738771/60f566f05c.pdf
    • http://files.wildflowerrunner.com/uploads/1/3/1/3/131397987/sesudugujupofovugex.pdf
    • http://files.greateragapedeliveranceminitriesinc.com/uploads/1/3/0/8/130873717/ffc8b52.pdf
    • http://files.urbanfood.org/uploads/1/3/1/4/131454521/9172709.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/mixejigapukaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/59448404717.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1414/files/discord_webhooks_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/talatofozi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3624/files/cambridge_igcse_ict_coursebook_with_cd_rom_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8723/files/94328527603.pdf
    • https://cdn.shopify.com/s/files/1/0433/0147/0366/files/computer_science_careers_list.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/ggplot_x_ticks_angle.pdf
    • https://cdn.shopify.com/s/files/1/0432/1594/5890/files/cerumen_impaction_patient_handout.pdf
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/tarejalimajutub.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/67473662415.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0181/files/zunugapaxowopitiz.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_off00007210.bin
7602aadfe6132af42602275348cb255940856f6b40034bf9dcfe045aaf0ac20f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7210 5540 bytes
font_01_sfnt_off00008516.bin
c3914b9916d21a9df1c5abd85cdb16ed362a8a64c2dc2497ecb03bbe64df8285
pdf-font-stream PDF embedded font (sfnt) at offset 0x8516 10204 bytes