Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f37ac2a9d299e15…

MALICIOUS

PDF

50.3 KB Created: 2020-08-20 22:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ea6e1cae79e89b9c2878ce9366128c5 SHA-1: 64de43380e0dca7453f001e36bb1ff9dbecd4198 SHA-256: 8f37ac2a9d299e15a258585f9d597f14520a99b9a357a2c700b5bec7d5f5a53c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.com/pify?keyword=dissertation+guidelines+uom+faculty+of+education', is designed to lure users to malicious infrastructure. The document also contains a PDF link farm heuristic, indicating a large number of external links, many of which point to benign Shopify URLs, but the primary malicious link is the clear indicator of compromise.

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=dissertation+guidelines+uom+faculty+of+education
    • http://files.alexisarenas.com/uploads/1/3/2/6/132695280/loxukam.pdf
    • http://files.audreyartography.com/uploads/1/3/0/7/130775808/eca4ce6.pdf
    • http://files.smarterbites.org/uploads/1/3/2/7/132712214/xuvorop_resopofogopam.pdf
    • http://files.eudaimoniapress.org/uploads/1/3/1/6/131606755/5807015.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/mecanismos_de_absorcion_de_nutrientes.pdf
    • https://cdn.shopify.com/s/files/1/0439/1642/7419/files/pomujoremofomoxaliwupim.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5279/files/big_data_apache_spark_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/fimudewojagafiwofezovun.pdf
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/42907741883.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/3487558526.pdf
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/nomipiderutezitegogix.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/63001610966.pdf
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/bytecode_in_java_performance.pdf
    • https://cdn.shopify.com/s/files/1/0436/8905/0265/files/bungen_active_passive_englisch.pdf
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/your_answer_place_st._charles_library.pdf
    • https://cdn.shopify.com/s/files/1/0443/6800/3228/files/befivipetunirajop.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/14011538086.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/36451368791.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_off00006ee0.bin
67ed9d33d35ed5759dc09d4e9b51041e43b7810627bcec6f2ba6f7f3d26f80e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE0 5640 bytes
font_01_sfnt_off0000826d.bin
46d986534634e4e4c609287ebc141ef34344fe779501b9f576e3c7503e6bb49b
pdf-font-stream PDF embedded font (sfnt) at offset 0x826D 5444 bytes
font_02_sfnt_off000094df.bin
9aadccb8caca1fa5ce86da787c1cfbc2f23e02a2be1e6d5c763d1294c720dfad
pdf-font-stream PDF embedded font (sfnt) at offset 0x94DF 10860 bytes