Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2efbc7508a09839…

MALICIOUS

PDF

33.9 KB Created: 2020-08-29 21:20:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bcec590ca29b30c65af1a65374486f3 SHA-1: d2361bedac4ad8df915a6c9eed479a78e1588384 SHA-256: a2efbc7508a09839ed28042871551d229da3d4f1da39058075c2027277242887
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.com/wix?keyword=slide+text+messenger, which likely serves as a lure for phishing or malware delivery. The document body itself is heavily obfuscated and contains embedded URLs, reinforcing the malicious redirection attempt.

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.com/wix?keyword=slide+text+messenger
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/luzolozumaparavekogil.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5402/files/muvasukivasapoto.pdf
    • https://cdn.shopify.com/s/files/1/0438/7821/9944/files/dhl_airway_bill.pdf
    • https://cdn.shopify.com/s/files/1/0431/2144/2977/files/tugepu.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/xadunuguxidewagorikekopan.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/lurakavejagij.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/calendario_escolar_2020_a_2020_sep_para_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0557/4311/files/hazard_analysis_and_critical_control.pdf
    • https://static.usrfiles.com/ugd/1c90dc_8911600b039d44dab96a9f2c421ab919.pdf
    • https://static.usrfiles.com/ugd/ec0c41_8a39b571e6ae401ab75a5f57da9f122b.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ea1c3959d844548b409d93a3d539406.pdf
    • https://static.usrfiles.com/ugd/b8c837_98f4388ee5e94d30af131694b62b071d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2b96ae9efea49cda02753a74a29d5b9.pdf
    • https://cdn.shopify.com/s/files/1/0432/3396/8287/files/103rd_constitutional_amendment_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8150/files/gipigujivarumovepa.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_off0000469e.bin
d709ec56d6ab2dd52f881e01d998252d8b28f8670d3909419bdbc3724ea5cfce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x469E 5104 bytes
font_01_sfnt_off000057e4.bin
d559c21d70b2e6121498d4a5e13ad4c8bf4896dd28eb34072282792af8d80a76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E4 10464 bytes

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