Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c212bd1f96c9ae2…

MALICIOUS

PDF

51.1 KB Created: 2020-08-04 20:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0ad23088d2c42f676a4fb38c05f4a0d SHA-1: b405cfa529b3983b11ac1edf55a2a67c384ce3c2 SHA-256: 1c212bd1f96c9ae2423aa6d9ae0928dce51a3ad9eb0ea3380e81d9b36264c5af
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=elsa+frozen+coloring+pages+pdf. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution.

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=elsa+frozen+coloring+pages+pdf
    • http://files.marinofernandes.com/uploads/1/3/0/8/130874615/7b856d5b0e7159.pdf
    • http://files.manchestertaekwondo.com/uploads/1/3/2/7/132710780/6d4da6a.pdf
    • http://files.fumcrutherfordton.org/uploads/1/3/2/6/132695663/kozesekonib_wikuko_xazitodugifilog.pdf
    • http://files.biofordp.net/uploads/1/3/1/1/131163599/6088808.pdf
    • http://files.generator-marketing.com/uploads/1/3/0/7/130775135/bumejuvadudapowob.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/77762490031.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2317/files/62516087221.pdf
    • https://cdn.shopify.com/s/files/1/0428/5333/5207/files/ronamekawofin.pdf
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/how_to_determine_ac_5e.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/monafabixixekex.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/wutegijenolifuvigifipunad.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/kawasaki_mule_610_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/segarakovowema.pdf
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/89074745158.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/87174458605.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2589/files/wibitimamu.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_off00008990.bin
e0aab8c6866c3b1b491d275f021a305974c5dd4632db11433ce990855dec7dae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8990 5332 bytes
font_01_sfnt_off00009bcd.bin
c0f7a20154b7fa7bade6e05cdc007942e31481480fd287ae56dc2d4d9c36fd65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BCD 10328 bytes

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