Malicious PDF — malware analysis report

Static analysis result for SHA-256 811f5e5650ccbb09…

MALICIOUS

PDF

43.0 KB Created: 2020-08-15 23:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 623c1b3be55db7729a6ebd8e9fda2315 SHA-1: a41f9430388012dc532ca142673fe6972bdd4059 SHA-256: 811f5e5650ccbb0996b98d1acb2e07e09dabf17565cdfc64915bb39f30f6bb1b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a link farm designed to lure users to malicious redirectors, disguised as a vehicle owner's manual. The primary malicious URL identified is https://ttraff.cc/wb?keyword=manual%20del%20propietario%20nissan%20tiida%202008. The document body is heavily obfuscated, but the presence of multiple embedded PDFs and a known malicious redirector strongly suggests a phishing or malware distribution 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.cc/wb?keyword=manual%20del%20propietario%20nissan%20tiida%202008
    • http://files.bristolhairdressing.com/uploads/1/3/1/8/131857334/51f1e7e184bd73.pdf
    • http://files.lynnecrookespepper.com/uploads/1/3/1/4/131410009/1894536.pdf
    • http://files.puldinauto.com/uploads/1/3/0/7/130775171/depimob-kuxenafobix.pdf
    • http://ranowob.nishatrades.com/uploads/1/3/1/4/131483281/416261915fdc3.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4615/files/jevumepig.pdf
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/49122395481.pdf
    • https://cdn.shopify.com/s/files/1/0448/5634/4737/files/high_eyes_meme.pdf
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/kodatiboxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/pokemon_blue_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6288/6554/files/wifulutekegan.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/mewikerimogaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6918/files/ceo_andhra_pradesh_voter_list_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/sipewanefebunimisefu.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_off000067d8.bin
d6826802779052229281e5ae8d70e8bf290fa09a50ca0629b2932d8016021caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D8 5424 bytes
font_01_sfnt_off00007a54.bin
ce2569f936d849b1550aa9b6a38a3034dbdf5bc48088e250ec8e2f7ff0c13b5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A54 10752 bytes

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