Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8dad96ced425252…

MALICIOUS

PDF

32.3 KB Created: 2020-08-20 21:07:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe3ca19f56a51e198289a0691168fa2a SHA-1: cb1c29da29b71b9144c9c390aa9956a38d6a2a9e SHA-256: c8dad96ced425252067f926207b82f24e2b52632362fdc101b9d2eabe5ab8aac
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious link points to a known redirector infrastructure. The document body, though heavily obfuscated, contains the malicious URL and references to 'despacito backing track', suggesting a lure. 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.ru/pify?keyword=despacito+backing+track
    • http://pisul.holdingspacedoula.com/uploads/1/3/2/6/132681670/083eb8b8d0.pdf
    • http://files.kodleague.com/uploads/1/3/0/7/130740589/6315993.pdf
    • http://vomedezon.somethingsoldsomethingsnew.com/uploads/1/3/0/8/130873877/4642869.pdf
    • http://mepure.empoweredbyloveministries.ca/uploads/1/3/2/6/132681670/wogep.pdf
    • http://files.rto2go.com.au/uploads/1/3/1/4/131453990/libojafowede.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/83489861707.pdf
    • https://cdn.shopify.com/s/files/1/0437/3066/5637/files/best_platform_bed_frame_wood.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/past_tense_and_past_perfect_tense_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8469/files/votigotikajiwepupijuru.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/arthritis_uk_back.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/59842315461.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/53106893857.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82191842179.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/tawezipuluxogevopapasatak.pdf
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/lowes_bellefontaine_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/rutogimaku.pdf
    • https://cdn.shopify.com/s/files/1/0433/5792/9623/files/final_fantasy_14_act.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_off000043cb.bin
80ea80c7453944cadb92dabab4bfcc0215413a6d31cb82ad5a53dbe880fae641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43CB 5272 bytes
font_01_sfnt_off000055c5.bin
2554aac01e28b030dbe2e01675a97e695ebe34973081d61d80e24b8546a454c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C5 8908 bytes

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