Malicious PDF — malware analysis report

Static analysis result for SHA-256 febd6d158f9183c4…

MALICIOUS

PDF

44.3 KB Created: 2020-09-06 05:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08109ce3495286149a2f20318c075dee SHA-1: 341f3ee35c32e75fa7b04267db0d02c3ee09bebf SHA-256: febd6d158f9183c45f584e9f0d4ceba7c64367026e9896445e6ee7a394c947f2
152 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL associated with a software download lure. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this, and the ML_NYX_PDF_MALICIOUS score indicates a high probability of malicious intent. The document body contains text related to 'Adobe premiere pro for windows 10', likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/wix?keyword=adobe+premiere+pro++for+windows+10
    • https://cdn.shopify.com/s/files/1/0434/2431/7607/files/76906108432.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/tulugevufirogopumip.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/bufugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdf
    • https://static.usrfiles.com/ugd/5ea4d5_37ce4df4098444878130fb7a087550d9.pdf
    • https://static.usrfiles.com/ugd/97aff7_3e1ef9bc1da34b3eb65936513bcb5023.pdf
    • https://static.usrfiles.com/ugd/140efa_39ddb750baa94504833154bc3ee22c64.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7546/files/xagaxela.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/4002/files/poultry_diseases_and_their_treatment_book.pdf
    • https://static.usrfiles.com/ugd/8e1900_b426059c90b54670bbf5b4aa65312d14.pdf
    • https://static.usrfiles.com/ugd/432b07_d76057a5bbd54cccafd2b65c44bb8068.pdf
    • https://static.usrfiles.com/ugd/3c9ac1_8055294d96d64f9e914270ada4b41c56.pdf
    • https://static.usrfiles.com/ugd/a4e402_1f7ad1d2f09b4acb8cc699700da3e604.pdf
    • https://static.usrfiles.com/ugd/5b9a87_2b961ea6a84c4c99ae47a60ff45875bd.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_off000062a1.bin
8475c5cd68860e0b972075b7f4c8660bb68310dd2a91df6b831d6489b3e64f10
pdf-font-stream PDF embedded font (sfnt) at offset 0x62A1 5068 bytes
font_01_sfnt_off000073cc.bin
8dddd95d8467d630ede0a29dd17d680c2459a4ac4285f597142537373f1b7974
pdf-font-stream PDF embedded font (sfnt) at offset 0x73CC 10128 bytes
font_02_sfnt_off00009672.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9672 4324 bytes