Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf018f59feb1cb5…

MALICIOUS

PDF

40.6 KB Created: 2020-09-03 02:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a25897e597b10e098b3c88237b74febb SHA-1: cb2646b900dbc27f5e91336cd461011f6730bcf2 SHA-256: bdf018f59feb1cb5f6cf352603268b7f60937904e106514dd8b406db8f102384
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, pointing to 'https://ttraff.me/wix?keyword=bahubali+2+film++tamilrockers'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a heuristic for a PDF link farm was triggered, with many links hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also strongly flagged this PDF as malicious.

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.me/wix?keyword=bahubali+2+film++tamilrockers
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/61867201102.pdf
    • https://cdn.shopify.com/s/files/1/0431/6712/1565/files/c_c_c_ki_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7707/5108/files/jasalovuwubekiginusuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2181/files/biology_the_dynamics_of_life_reinfor.pdf
    • https://cdn.shopify.com/s/files/1/0435/7763/9071/files/applied_physics_for_diploma_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0462/1795/3433/files/99881658046.pdf
    • https://cdn.shopify.com/s/files/1/0463/4158/7100/files/11341352542.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/38833229459.pdf
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/tipos_de_anemia_fisiopatologia.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/10259518280.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/brit_awards_2019_sam_smith_performance.pdf
    • https://cdn.shopify.com/s/files/1/0440/5942/6968/files/311_all_mixed_up_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/commodatum_contract_template.pdf
    • https://static.usrfiles.com/ugd/b88e3d_a2717d941dc24c8b923c7b7765e032ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_8af60d5ed3234506aca823bb21f2a1f5.pdf
    • https://static.usrfiles.com/ugd/575363_3497a3b4bdc444ccb3e626720e4d158a.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_off00005f3f.bin
db83e9976ffafcd6dc0c8925a9259958b4c3dfd941ee41d1c16ef84f4ebaf35c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3F 5504 bytes
font_01_sfnt_off000071d5.bin
0c053994106f56d192da2fa7459fe5538d6d0afc9c3c15d11196112ea89ea0ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D5 10496 bytes