Malicious PDF — malware analysis report

Static analysis result for SHA-256 786e5ad0eeec1dc5…

MALICIOUS

PDF

70.0 KB Created: 2020-07-29 23:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64d01b10b7c5bac316eae878ceb898cb SHA-1: 902e31912eee15fd3b8adcb46d3f87be97c3e51d SHA-256: 786e5ad0eeec1dc580a82d4e01a53c600b377d700dd5afa59e26e71b806e9adc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious link identified is https://ttraff.ru/pify?keyword=top+down+and+bottom+up+approach+in+nanotechnology+pdf, which is flagged as a malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of the link farm and the malicious redirector strongly suggests a phishing or 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.ru/pify?keyword=top+down+and+bottom+up+approach+in+nanotechnology+pdf
    • http://files.cartyfamily.org/uploads/1/3/0/9/130968943/vowawagopoz.pdf
    • http://files.samerhatam.com/uploads/1/3/0/7/130739069/winetoke_kepuxavilere_movemuwavunegik.pdf
    • http://files.akk-dc.com/uploads/1/3/1/0/131069781/2219421.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/46447443021.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3508/files/88371776687.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/benapufosugaravoderodur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.pdf
    • https://cdn.shopify.com/s/files/1/0437/1329/8581/files/zejomugaruxut.pdf
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/pitusuxesabuxus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5483/3557/files/dorinimojejekemakasun.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/73146613245.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sibubemazalomasedexikeme.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a3d.bin
113858e0a66967a1257d3b93b1ca28047ebc33fc8f17afcd34b894058f971667		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3D 5556 bytes
font_01_sfnt_off00008cfe.bin
98d74bb9f5de1318d3553c114a01edd3ef593a861dd6ca7efdaae24927386860		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFE 5620 bytes
font_02_sfnt_off0000a199.bin
75abf8da50affe5aa315661f3ad13c753d1257931a71be3471d5a51f711786ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA199 17800 bytes
font_03_sfnt_off0000cca6.bin
2f349be1aa001011837e06abaede8c834b933194a61d3e2732d6e265cbaaece5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA6 10268 bytes
font_04_sfnt_off0000efed.bin
4dc67e8926991813ac4eafd8729735af9e4abdf7ceac030b101ab983ecc95da3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFED 16412 bytes

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