Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1df2bf25e39993c…

MALICIOUS

PDF

46.2 KB Created: 2020-08-12 02:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 523d6bbeec4d30230d8785a6604a7e70 SHA-1: 40a77a06a3d2d3633f4b7b32baa4b49d20d979f1 SHA-256: c1df2bf25e39993cf728e71c870cca55fbc52d3c0e386ae977f46f9a10f19c45
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=plant+ecology+lecture+notes+pdf'. This indicates a social engineering attempt to direct users to malicious infrastructure, disguised as lecture notes. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility. No scripts were extracted from this sample.

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=plant+ecology+lecture+notes+pdf
    • http://files.sal-elsayed.com/uploads/1/3/0/8/130874451/porilewofu-velor.pdf
    • http://files.drivinglessonsrichmond.com/uploads/1/3/2/6/132695200/pofonipo.pdf
    • http://files.preengreensalon.com/uploads/1/3/0/9/130969907/pobejobodubixuranaf.pdf
    • http://files.suburbanhennepinhousingcoalition.com/uploads/1/3/1/3/131380354/9726478.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/womonevixaxijebuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/cerfa_13757_x_01_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/motiwifididoxurugeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/jexegodibafer.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/capteur_d_humidit_du_sol_analogique_et_numrique.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdf
    • https://cdn.shopify.com/s/files/1/0433/8132/5987/files/jezibipowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1569/0650/files/liraxesimuxidimamiba.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2102/files/banting_smoothies_for_weight_loss.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4495/files/carpal_tunnel_syndrome_exercises_nhs.pdf
    • https://cdn.shopify.com/s/files/1/0428/5353/1807/files/9613718660.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/49747058388.pdf
    • https://cdn.shopify.com/s/files/1/0430/2028/8153/files/xafudowolubizituxage.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_off0000690f.bin
41dae34c068da21623b5649f1b28d595c019deff41656b2f11d29a40be80eec7
pdf-font-stream PDF embedded font (sfnt) at offset 0x690F 5260 bytes
font_01_sfnt_off00007afe.bin
edcee622df56b09d12502e242ebfd7c1879b0b67cb376e47fa337c806f44e9e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFE 10280 bytes
font_02_sfnt_off00009ddd.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DDD 4324 bytes