Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae0e2b98b0b9b56…

MALICIOUS

PDF

40.1 KB Created: 2020-08-01 07:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cab5aef5c5017743860d0c93991a30e SHA-1: 2c3632074100357a0c19b6990e8cf91a370d42ce SHA-256: 1ae0e2b98b0b9b5633b194d2b414b7d88f5112a2c29b07bcad9f80be845b24f7
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link-farming or redirection scheme. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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.com/pify?keyword=javascript+static+variable
    • http://files.rebeccaflis.com/uploads/1/3/0/7/130775936/7572032.pdf
    • http://files.anytimemovers.com/uploads/1/3/2/6/132695428/padixexib.pdf
    • http://files.greatervictoriaartistdirectory.com/uploads/1/3/1/0/131070845/4a29f79.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/91295271581.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/58385385066.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0300/files/ios_8._1._1_jailbreak.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/pimesegu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/1024117074.pdf
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/lupupuzegerajifasaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/tubozix.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/wogojalusolawojudegeguri.pdf
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/jokabufufatumamulopukas.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/kusetafudalinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/65043566284.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_off00005f1b.bin
b73e42145af687578bd1e8c968c9318e70848feb097a6fa51eab5822a5efb895		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1B 5116 bytes
font_01_sfnt_off0000709a.bin
6e1d24bb2ebbd7f6cac90a78e100ffd421dd50866f0f67c7fec31567b11274f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x709A 10420 bytes

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