Malicious PDF — malware analysis report

Static analysis result for SHA-256 976d550a688c3995…

MALICIOUS

PDF

51.0 KB Created: 2020-08-24 22:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b64027be4d194300344495469f46caf4 SHA-1: 01511711891a24ec83bb5a99735eee12b33bce84 SHA-256: 976d550a688c39959c2228822545cb56aa9ba593da479312be67df81a332c6e4
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, disguised as a game review, redirects to a malicious URL (ttraff.cc). This suggests a social engineering attack aimed at tricking users into visiting malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=anarchy+reigns+game+informer+review
    • http://files.coachscottschemistry.com/uploads/1/3/1/6/131637271/xanogoluzovad.pdf
    • http://files.societyofstbrigid.net/uploads/1/3/0/8/130874361/4036388.pdf
    • http://gedix.toledopresbyterian.com/uploads/1/3/1/4/131409236/7573600.pdf
    • http://files.marcusjosephsax.com/uploads/1/3/1/6/131606321/79866133.pdf
    • https://cdn.shopify.com/s/files/1/0428/3006/9927/files/bioreactor_landfill.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gobobuxewinunegurugita.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/91149355324.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/dakowofipobun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/gofurizupomojamodit.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3880/files/18364021044.pdf
    • https://cdn.shopify.com/s/files/1/0432/0346/1283/files/30524802076.pdf
    • https://cdn.shopify.com/s/files/1/0429/4869/0076/files/jajipojofo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0900/5978/files/mobavukuvitezasonix.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6615/files/amaravati_kathalu_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/73016488997.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074ab.bin
c5cdc15da1a4581e605c3f7a5b1575a1cf2edba691a1d60e03849bed1597109c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74AB 3788 bytes
font_01_sfnt_off0000820f.bin
a13843d9b209d7da70bd7313aa5a01d46800f56c7aaa2b5a30342124cb378552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x820F 5504 bytes
font_02_sfnt_off000094b5.bin
7fed1efc869851c045a9e2df98e8b2cf01716eee4b09781dc014bb3914aedbe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B5 13444 bytes

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