Malicious PDF — malware analysis report

Static analysis result for SHA-256 20718eac15e5c4a1…

MALICIOUS

PDF

44.3 KB Created: 2020-08-06 21:06:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fdb2ed55f2a42e02fcb200cc5453358 SHA-1: 501a316595915e959be70e5b780385127367cc8d SHA-256: 20718eac15e5c4a1a84e5a47bf18473a1615810773181425c886d2a4da1d8fd1
128 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a link farm designed for SEO manipulation. The document body also contains a call-to-action phrase, suggesting a lure to click the embedded malicious URL. The primary malicious URL identified is https://ttraff.ru/pify?keyword=convert+adobe+pdf+to+word+online+free, which redirects users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=convert+adobe+pdf+to+word+online+free
    • http://webudepu.simplyearlyjazz.com/uploads/1/3/0/7/130776611/bufuda.pdf
    • http://files.mheine.com/uploads/1/3/2/6/132682851/vinat.pdf
    • http://files.haapsdatters.com/uploads/1/3/2/6/132683088/rezew.pdf
    • http://files.wilcoprevention.org/uploads/1/3/1/4/131437740/29b296.pdf
    • http://files.greeceny468legionpost.com/uploads/1/3/0/8/130874403/3987080.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/xusezitifupas.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/iluminasi_cahaya.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/everything_about_effective_communication_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/gakamefezowubarujezave.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/63500275847.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/mozip.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/fosibakadajemoxemewim.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/35930609388.pdf
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/vipagede.pdf
    • https://cdn.shopify.com/s/files/1/0431/4402/0125/files/wii_iso_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0430/9486/8122/files/xopiwewisiwopuxebusasap.pdf
    • https://cdn.shopify.com/s/files/1/0433/9826/7029/files/human-_eating_lady_persona_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/vuwuwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/70108839999.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_off00006209.bin
c342a4b2babb668960034e961cc388be173dbfdd337c1e4325cbb6fc7e7cb668		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6209 4960 bytes
font_01_sfnt_off00007308.bin
d6126dc2a10af45a65ab82e35550ae0d6e20214f46c9ee4797b09b9aeb4afb14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7308 10248 bytes
font_02_sfnt_off00009604.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9604 4324 bytes

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