Malicious PDF — malware analysis report

Static analysis result for SHA-256 23a0a4f10102d786…

MALICIOUS

PDF

62.3 KB Created: 2020-07-29 05:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 404925400a29c2f48a16736a6067ff35 SHA-1: a6ea45d28586f3b6c1d5cb3bd9a5201f5a402d72 SHA-256: 23a0a4f10102d786674c1c800e47da731ac788ea855c77845739638e64926d0f
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a link farm containing numerous external links. One of these links, 'https://ttraff.cc/pify?keyword=vanilla+wow+fury+warrior+leveling+guide', points to a known malicious redirector. The document body appears to be obfuscated or corrupted, preventing analysis of its specific content, but the heuristic firings strongly indicate a redirection attack.

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=vanilla+wow+fury+warrior+leveling+guide
    • http://files.buyalphabetphotos.com/uploads/1/3/1/3/131379117/zidovoxa.pdf
    • http://files.coldbrewespresso.com/uploads/1/3/1/3/131384173/e48d07a20d48d.pdf
    • http://files.lancasterthundertix.com/uploads/1/3/1/8/131856700/sizusazasoxa.pdf
    • http://files.ashliesart.com/uploads/1/3/0/7/130739146/792edad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86477918810.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizuvesadumewagetikuxumut.pdf
    • https://cdn.shopify.com/s/files/1/0434/5973/9814/files/17070967133.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/tavit.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/jelova.pdf
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/netimiduzulowibumi.pdf
    • https://cdn.shopify.com/s/files/1/0438/8959/0427/files/bupidobebudesefupugif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31443612403.pdf
    • https://cdn.shopify.com/s/files/1/0431/0492/7905/files/fadasat.pdf
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/74619666552.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/25329496717.pdf
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/noxiwevel.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_off0000b7dc.bin
53c87a064b6b206660e47441c00857b6ff8991368128e6f520b45177587258a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DC 4916 bytes
font_01_sfnt_off0000c8b9.bin
a700e3dff6e744f78eb315ceb16ef0b63535b95e5140193ddac57f2dd099a37a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B9 10468 bytes

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