Malicious PDF — malware analysis report

Static analysis result for SHA-256 d52e009e8da8ab7f…

MALICIOUS

PDF

53.8 KB Created: 2020-09-09 17:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa48c6899cc117c439a698925036f0e3 SHA-1: 7a416e844ddf773f8fcf1578d5e22c80dacabc92 SHA-256: d52e009e8da8ab7f7a0b454cc5edfcf14321a8fd7ad88cac49caad7ade88e56e
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the PDF is designed to redirect users to malicious sites, likely for further exploitation or phishing.

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/pify?keyword=criminal+movie+songs++free
    • http://files.oakcreekzc.org/uploads/1/3/1/6/131636769/645e755caeb41.pdf
    • http://files.landofclearlight.com/uploads/1/3/2/6/132682989/gosetozerafodux.pdf
    • http://dumotubus.needsofmany.org/uploads/1/3/0/8/130814328/wukebalefulimotir.pdf
    • https://cdn.shopify.com/s/files/1/0453/6372/4443/files/37722125830.pdf
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/donell_jones_all_her_love.pdf
    • https://static.usrfiles.com/ugd/40336e_2b8cb3676f014de7859fa6fe2a95f2ae.pdf
    • https://static.usrfiles.com/ugd/29c71c_b78e89b790c34ea6b18b1dd78296e54e.pdf
    • https://static.usrfiles.com/ugd/0a593f_9f5bccb8cafe40abbda827793c5bdb2a.pdf
    • https://static.usrfiles.com/ugd/966478_6647f72cf5d34aca869d7489cf073f2e.pdf
    • https://static.usrfiles.com/ugd/756799_bbd35f29903445c1b00f6789780e69b5.pdf
    • https://static.usrfiles.com/ugd/8ba634_a54164dc9aaf4373ac525ab03fa33bd1.pdf
    • https://static.usrfiles.com/ugd/eda9ba_d1cedefb8ea54d5d9f407afce9940426.pdf
    • https://static.usrfiles.com/ugd/d5d855_e8a3996755d042e3b420f4689e26bde9.pdf
    • https://static.usrfiles.com/ugd/fbccce_4eafcd8dc15542cd91214262a2b36790.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_off00008160.bin
9b07efb5cd8dd7bcadff95a3bd6c091ce62cbbc90b43153e909f94422286d19c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8160 4876 bytes
font_01_sfnt_off000091d6.bin
71ec215c958ae7dd03faea44e13de051111b618d67fc383dd59a2226e2eb7341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91D6 13092 bytes
font_02_sfnt_off0000bc3e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC3E 4324 bytes

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