Malicious PDF — malware analysis report

Static analysis result for SHA-256 5171c41f2a2e4cb9…

MALICIOUS

PDF

45.3 KB Created: 2020-08-24 17:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b48965f7fba3528fc23760e216f4947f SHA-1: 401f23d02810e3aba72379c1463bd369780ca95b SHA-256: 5171c41f2a2e4cb93b2047b2d04273cef137afd5847e3ad35436827eead124fd
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is presented as an "Arrow season 7 trailer" in the document body. This link leads to ttraff.cc, a known malicious redirector. The document also contains a mass external PDF link farm, with many links pointing to shopify.com, likely for SEO manipulation to increase visibility of malicious content. The ML classifier also flagged this PDF with high confidence.

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=arrow+season+7+trailer
    • http://files.towtruckmilltownnj.com/uploads/1/3/0/7/130776343/5f6347d.pdf
    • http://refilaw.domissimahomes.com/uploads/1/3/0/9/130969341/7629851.pdf
    • http://files.powderhouselovelocknv.com/uploads/1/3/0/7/130776562/batapobilunuledadodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/tigirum.pdf
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/bandurria_notes.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/wezalu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/baragofizabegiloguparej.pdf
    • https://cdn.shopify.com/s/files/1/0434/0639/3496/files/sojorizejofugekal.pdf
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/xumefol.pdf
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/jevesekaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/3087/2215/files/83510211820.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/13126361084.pdf
    • https://cdn.shopify.com/s/files/1/0433/3371/4070/files/likepogowafogikiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/6252/4069/files/5631792554.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_off000067c8.bin
fb71f9519dde7954f089ffa81d59f846dce83857c2338fa19ef361788a663e45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67C8 4628 bytes
font_01_sfnt_off00007798.bin
d07f18383c46495a8f1f8b81c034dc5dae633799896a1c4c1fdeb6b0a0a345d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7798 10248 bytes
font_02_sfnt_off00009ab3.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB3 4324 bytes

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