Malicious PDF — malware analysis report

Static analysis result for SHA-256 f48b75bac91cd93e…

MALICIOUS

PDF

45.2 KB Created: 2020-08-10 06:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd3638d753e65e0c31d4df466c423c9b SHA-1: 5962c428f0ad5e3b6c01ef584cc40bacfdce7425 SHA-256: f48b75bac91cd93e396a5f082725039fbff4566287164aab63995656a11c0dfb
160 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. The heuristic firings indicate that this is a malicious redirector and a link farm designed to distribute PDF files. The presence of a visible LOLBin command execution instruction suggests that the document is intended to execute malicious code or facilitate further compromise. The primary attack pattern involves social engineering through a link farm to redirect users to malicious content.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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.cc/pify?keyword=medidas+dela+cancha+de+futbol+soccer+pdf
    • http://files.megumihiramoto.com/uploads/1/3/2/6/132682913/4c20a2ae2d8213c.pdf
    • http://files.fourmilecreekspelling.com/uploads/1/3/1/1/131164442/jibetisijisavatofo.pdf
    • http://jajote.thecurlhaus.com/uploads/1/3/1/4/131406082/rijuninakedox_fajevete.pdf
    • http://files.swiss-german-online.com/uploads/1/3/0/8/130874489/75ff69bc.pdf
    • http://files.spanish-charts.com/uploads/1/3/0/8/130813888/729968.pdf
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/stoelting_s_anesthesia_and_coexisting_disease_6th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/1362/7294/files/29518922975.pdf
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/solawapofinepumiwep.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuxojusi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/jobab.pdf
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/property_appraisal_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/allotropes_of_carbon_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/71294753735.pdf
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/79597520022.pdf
    • https://cdn.shopify.com/s/files/1/0440/5038/2998/files/wizisozol.pdf
    • https://cdn.shopify.com/s/files/1/0437/2735/6056/files/moluzexozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/zafapikibokap.pdf
    • https://cdn.shopify.com/s/files/1/0447/9080/8737/files/sodumumod.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_off00006e4f.bin
43232cff7a36652b4dd7546a303197bf9f18e1f944dbf560971fbdc71be180ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4F 5388 bytes
font_01_sfnt_off000080a2.bin
4348544b2857f1b23e86c08f45a54d3be7dfdb79929d57d281825a772f89d945
pdf-font-stream PDF embedded font (sfnt) at offset 0x80A2 11448 bytes