Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c00efa3d607643d…

MALICIOUS

PDF

42.4 KB Created: 2020-08-14 07:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 770b330b310ad1e05e3ff8839c3ba028 SHA-1: c38a4aaa1725c46b0840b867b333ca671c946b3b SHA-256: 3c00efa3d607643db34c21f446eecd717e71d1dac3f6f57b5b3b71d3cef4969e
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 Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a redirector link to 'ttraff.cc' which is known malicious infrastructure. The document body contains text related to 'Google translate software for pc free', likely a lure to entice clicks on the malicious redirector URL. The primary attack pattern involves redirecting users to malicious sites under the guise of providing free software.

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=google+translate+software+for+pc+free
    • http://files.tigertrailstadoba.com/uploads/1/3/1/3/131383247/ziwafilibedok.pdf
    • http://files.david-jones-society.org/uploads/1/3/0/8/130814642/dixagululekivex_tekixomixe.pdf
    • http://veposin.markromangbooks.com/uploads/1/3/1/3/131398020/gisej-zoxivofonuraxu-foxeju-jisuzukob.pdf
    • http://files.ires-8.com/uploads/1/3/1/3/131379510/wibuxukam.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/47864424953.pdf
    • https://cdn.shopify.com/s/files/1/0433/6861/1998/files/descargar_cymera_gratis_para_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/mutumegiduvusaki.pdf
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/43696482873.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/roguretefokuxawibib.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/98082000745.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0841/files/25488191697.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/pubadutizimomima.pdf
    • https://cdn.shopify.com/s/files/1/0436/5221/9030/files/o_level_physical_science_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/8332/3806/files/learn_arabic_words_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/types_of_cancer_cells.pdf
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/58692125840.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wawufomujemozinabewa.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_off00006585.bin
e51a16e752abffb93ef1c92fac63cfd790148a6d8d6d0212a1fd3846eca3aae5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6585 5304 bytes
font_01_sfnt_off000077bb.bin
1c634eb8cabd43d8cdfb1de153d58ede8986ff0a0803831d6dd61eb0af635e31
pdf-font-stream PDF embedded font (sfnt) at offset 0x77BB 10644 bytes