Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1c6a8654bcac87b…

MALICIOUS

PDF

43.6 KB Created: 2020-09-01 20:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77168134f50f3c5558a654c7ad39ac52 SHA-1: f6abc994973f939c9ac4a783fced85c45fdfc748 SHA-256: b1c6a8654bcac87b21062300e2b99fbbd2a9427067ec50ff3fac57d255aa206e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a PDF link to a known malicious redirector infrastructure at 'https://ttraff.me/wix?keyword=bhakta+prahlada+telugu+songs+free++doregama'. The document body, though heavily obfuscated, also contains this redirector URL. This suggests the primary goal is to redirect the user to malicious content.

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=bhakta+prahlada+telugu+songs+free++doregama
    • https://cdn.shopify.com/s/files/1/0435/2363/7402/files/template_powerpoint_free_science.pdf
    • https://cdn.shopify.com/s/files/1/0440/3852/0997/files/fruits_vegetables_worksheets_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/aromatic_and_antiaromatic_and_nonaromatic.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3383/files/vizio_tablet_wont_download_apps.pdf
    • https://static.usrfiles.com/ugd/b8c837_3cbaa84d9d7345cf81a4212289ed7854.pdf
    • https://static.usrfiles.com/ugd/9219f8_cec770508ffc4e73a24d66dd9264f877.pdf
    • https://static.usrfiles.com/ugd/b13fd1_93a078850e1e4894a1e2f9de8c5effef.pdf
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/derudufofozogo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/62396611923.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xovigaza.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/doloxezabenikewibifu.pdf
    • https://cdn.shopify.com/s/files/1/0446/9299/6252/files/book_of_life_nathaniel_bassey_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/47794989683.pdf
    • https://cdn.shopify.com/s/files/1/0451/0826/5125/files/fefatesunud.pdf
    • https://cdn.shopify.com/s/files/1/0436/2030/3006/files/78674218953.pdf
    • https://cdn.shopify.com/s/files/1/0453/8574/4552/files/astronomy_books_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.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_off000053a2.bin
4ce01b78b9fa71f5ff29881fe16eb7299f019329de5a43a0278dbd5b9f7a850c
pdf-font-stream PDF embedded font (sfnt) at offset 0x53A2 5400 bytes
font_01_sfnt_off000065d2.bin
1cbf97bf240d83ab0b05813f8b38cb773d2abdd2ecbf222d135223e9ae7a4742
pdf-font-stream PDF embedded font (sfnt) at offset 0x65D2 14600 bytes
font_02_sfnt_off00009327.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9327 4324 bytes