Malicious PDF — malware analysis report

Static analysis result for SHA-256 b48465c936343e4a…

MALICIOUS

PDF

36.9 KB Created: 2020-08-05 23:04:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9298289b3af6bf90651bb463423a5c3 SHA-1: 9c425137413778637861b6ab28e72cef1d3e56eb SHA-256: b48465c936343e4a826365a239ccce9f6b2da43d2a41855b9e23ded2d9e50db7
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that suggests a lure related to a 'black panther film script'. The primary attack vector appears to be tricking the user into clicking the malicious link, which then redirects to further malicious content.

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.com/pify?keyword=black+panther+film+script+pdf
    • http://gotaveb.littleacornsharlow.com/uploads/1/3/1/8/131871699/jusepamo.pdf
    • http://files.springfieldfoodpolicycouncil.org/uploads/1/3/1/4/131453065/3365998.pdf
    • http://files.paulmurphydesign.com/uploads/1/3/0/8/130813770/6513495.pdf
    • http://files.pmagsd.org/uploads/1/3/0/7/130739549/1336698.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/49572984763.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/bolabijamumizogubek.pdf
    • https://cdn.shopify.com/s/files/1/0437/9839/7085/files/piribubufotesan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/74358866198.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/wowegobib.pdf
    • https://cdn.shopify.com/s/files/1/0437/0271/4533/files/4299691614.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3636/files/flame_orb_pixelmon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65925238695.pdf
    • https://cdn.shopify.com/s/files/1/0432/4543/7083/files/begik.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9504/files/75813645081.pdf
    • https://cdn.shopify.com/s/files/1/0428/2685/8662/files/64210813872.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_off0000530e.bin
db57cff1b607156d2b852e45cd28706568c8aaeeacb02f182610039fe0cdf898
pdf-font-stream PDF embedded font (sfnt) at offset 0x530E 5508 bytes
font_01_sfnt_off000065a3.bin
bbc9104c4fdbd2892541c8c56037f0e0ad120395073ef32ced8e6cef21b2feea
pdf-font-stream PDF embedded font (sfnt) at offset 0x65A3 9740 bytes