Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9de7dfcbd9206b3…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 18:47:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ca5dd80be7778957d00abd96dbfb5f9 SHA-1: c2fd004127b24c98d27444cb4da379027f1a6442 SHA-256: d9de7dfcbd9206b34524c916a4af23e5be9029687fc4ac1a58c686d70e250fb7
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=best+games+for+android+offline+2017'. The document body also contains this URL, suggesting it's a lure to redirect users to malicious content. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious redirector. No scripts were extracted from this sample.

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.cc/pify?keyword=best+games+for+android+offline+2017
    • http://files.harrisburghigh.org/uploads/1/3/1/3/131379371/d7ff44.pdf
    • http://files.onelinerjokelab.com/uploads/1/3/1/4/131483336/9142254.pdf
    • http://files.pulsarevent.com/uploads/1/3/0/8/130874134/9214878.pdf
    • https://cdn.shopify.com/s/files/1/0436/5484/0485/files/jawulewobuvit.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/miconia_albicans_canela_de_velho.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/48874837725.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7466/files/pufobojamujonurupad.pdf
    • https://cdn.shopify.com/s/files/1/0434/6481/8838/files/71695049783.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4587/files/kamoxevijitolewesene.pdf
    • https://cdn.shopify.com/s/files/1/0437/3151/7605/files/atopic_dermatitis_treatment_guidelines_nice.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/68982481503.pdf
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/tefoxalomidogovirofuwi.pdf
    • https://cdn.shopify.com/s/files/1/0451/9510/0311/files/rujogibimosafo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/skype_old_version_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/93334572562.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_off000066d5.bin
4692e22e3e4270c7a45771bab3ee622f1d7caf2ae3dc2279bbc257586449869b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D5 5684 bytes
font_01_sfnt_off00007a19.bin
7f57bffd61b39b3b9aa53ed7ef660b45ef153e3e60f80da595bb8def9e14dfc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A19 10212 bytes

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