Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ded2ae28ee402e1…

MALICIOUS

PDF

42.3 KB Created: 2020-08-11 14:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 537528470f8375a93f910e5a00e94579 SHA-1: d04b728fb2d5233239970267216b46314cb2e8a5 SHA-256: 3ded2ae28ee402e157b4a5ab2153c515525c70d579eccca77e351f1bdf4175d5
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 of which point to a redirector service (ttraff.cc). This indicates a phishing or scam attempt where the user is tricked into downloading a file or visiting a malicious site. The document body contains text related to PDF downloads and academic subjects, likely to appear legitimate. No scripts were extracted, but the presence of a malicious redirector link is a strong indicator of malicious intent.

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=biochemistry+and+molecular+biology+of+plants+pdf
    • http://files.grantmethod.com/uploads/1/3/0/9/130969192/977383ab0.pdf
    • http://wavaxap.asthecrowfliesquiltshop.com/uploads/1/3/0/9/130969724/1418962.pdf
    • http://xugonef.sundeepteki.org/uploads/1/3/1/3/131380729/4352331.pdf
    • http://files.womenwithapurposemin.com/uploads/1/3/1/3/131383613/medabuvopo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/effect_of_alloying_elements_on_steel_properties.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5688/files/practical_management_science.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6165/files/52305855436.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/28508951077.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/disinosifiwupatuzox.pdf
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/nobiriredazinakuperig.pdf
    • https://cdn.shopify.com/s/files/1/0432/0077/4307/files/2007_toyota_camry_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/sazoja.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/mohed_altrad_badawi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6975/1967/files/nomuzaravedijikiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/87239785157.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_off0000661a.bin
c98f21f11862940070c8be528e521c9c1072a29b9b8fe6a5fac9c189856919eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x661A 5860 bytes
font_01_sfnt_off000079e6.bin
6e9d85ff4f7de0d2f389efb7e757c4be7a3fe111a4bf06dda61a6cc648250d04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E6 10124 bytes

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