Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5716b5283f2338e…

MALICIOUS

PDF

46.3 KB Created: 2020-08-07 02:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41ae982fbea99d041a4fb5c37b246264 SHA-1: 5662c33022e758f5c285f6527b75666563bfd1fb SHA-256: c5716b5283f2338ec46733fde43354b32b22643ba639a59e598175fcafcc7175
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site. The presence of numerous links indicates a potential link farm or SEO poisoning tactic to distribute malicious content.

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=escala+salarial+camioneros+julio+2020+pdf
    • http://files.cchsny.org/uploads/1/3/1/6/131607054/pudikazukaf-fisasopi-rekikuki.pdf
    • http://files.bartoszek-laboratory.com/uploads/1/3/0/8/130874359/vajibomu.pdf
    • http://bixifuv.easyfreightaustralia.com/uploads/1/3/1/4/131407995/a65fa9.pdf
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/genibebasudobaxilutegaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6776/8981/files/xavuvurevopexari.pdf
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/77470016284.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/new_buffalo_michigan_things_to_do.pdf
    • https://cdn.shopify.com/s/files/1/0440/0241/0654/files/reddit_atlanta_r4r.pdf
    • https://cdn.shopify.com/s/files/1/0440/0037/9038/files/raverizunexupode.pdf
    • https://cdn.shopify.com/s/files/1/0448/2279/0305/files/como_convertir_de_a_word_en_macbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/1491/3191/files/16998157042.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/kunuxobixagaxukukegufita.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/bejenusexinezobabonolij.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9767/files/gelawipusavepe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/15809070066.pdf
    • https://cdn.shopify.com/s/files/1/0438/3608/0288/files/dukapikanazenu.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_off0000677b.bin
3d680cace0d31a186196ab72e31d175b7efaf3f4434dede8ce24519de20bee9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677B 5608 bytes
font_01_sfnt_off00007a7f.bin
efe68636d3e3a2c685b55b081c5feaa76503743386b3de2079a45e8b41f1e72e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7F 15732 bytes

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