Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2ce9149962e580…

MALICIOUS

PDF

47.0 KB Created: 2020-08-09 11:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4496d30ed00e2f57b9939fd6515da289 SHA-1: b8c7309298f4e4cba7f2add8e6ff8bcffd38c19f SHA-256: bd2ce9149962e5803bbbae0ca853e260f4a091c31b540a1942528ae1418529fe
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to domains associated with link farms and redirectors. One prominent link, disguised as an engineering notes download, leads to a known malicious redirector. This suggests a phishing or scam campaign aiming to drive traffic to malicious sites. 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.ru/pify?keyword=electronics+and+communication+engineering+notes+pdf+download
    • http://kikijakej.jcactprep.com/uploads/1/3/0/7/130776542/zafadifejurerozivin.pdf
    • http://files.theeverydaylosers.com/uploads/1/3/1/8/131856627/5836763.pdf
    • http://files.homegrownhighways.com/uploads/1/3/1/3/131380773/xiwemu.pdf
    • http://files.rachelheltonmusic.com/uploads/1/3/1/1/131164009/sexarololanovogab.pdf
    • http://files.jasontoonwrites.com/uploads/1/3/1/8/131856815/wetofapivokuv-kebabeg.pdf
    • https://cdn.shopify.com/s/files/1/0439/4018/4232/files/53504340072.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/14580585355.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/64111373016.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/28377988096.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/bozopigibabesidipilinax.pdf
    • https://cdn.shopify.com/s/files/1/0430/9958/6714/files/business_vocabulary_in_use_advanced_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5613/files/xikijebusepakuxuruvota.pdf
    • https://cdn.shopify.com/s/files/1/0440/8731/2534/files/parrot_bebop_2_power_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/nigutebedekazulowidunimap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.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_off00006c95.bin
d843d35b15526629ceb0c90fc94f095856e2933ce76de113f16c802b4faa4dfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C95 5524 bytes
font_01_sfnt_off00007f5a.bin
2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5A 2116 bytes
font_02_sfnt_off00008926.bin
699d365d84a796666eff17286126906d408ac372b3ae2d6d9b38aae66f0f17e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8926 10116 bytes

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