Malicious PDF — malware analysis report

Static analysis result for SHA-256 d33386048ba7b9bd…

MALICIOUS

PDF

42.2 KB Created: 2020-08-08 23:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b0e895603c83a9e2f79f94ff1b479fe SHA-1: 57d4dc7ecb855654f68e214e318c21affc815764 SHA-256: d33386048ba7b9bd99c162d09dc18c0286d6a4ad6bccba15a38e044b0c9d1608
120 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with many links pointing to PDF files hosted on Shopify. One of the embedded links, https://ttraff.cc/pify?keyword=ecologia+factores+bioticos+y+abioticos+pdf, is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. 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.cc/pify?keyword=ecologia+factores+bioticos+y+abioticos+pdf
    • http://files.annepwert.com/uploads/1/3/0/7/130739311/6123099.pdf
    • http://files.soundsofworship.com/uploads/1/3/1/6/131637362/5528954.pdf
    • http://files.gabrielsadzewicz.com/uploads/1/3/0/7/130738622/9d0b185af64c.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/66862005411.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/15422892056.pdf
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/babuniz.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7914/files/68751463080.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/80778996018.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/94008750573.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/mosidobiporuwezane.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/cancer_de_esofago_estadios.pdf
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/kosorej.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7958/files/management_of_hiatus_hernia.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2906/files/opencl_programming_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/lazunubovorixep.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/rpg_vx_rtp.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_off00006603.bin
ad9311d33b9d5adf721e9f8f76f784ef19dd53ee6894222f235465ba22008976		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6603 5520 bytes
font_01_sfnt_off000078e2.bin
3da34e252fd2178d7a4d2557ada8032d72c1d7ec3a686860ac3accf3bd4521d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E2 10220 bytes

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