Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b99e7f72b9106c…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 22:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43af967a0782f269cfe00093aed2eb21 SHA-1: 79ba03fd632da84f479ecb732006e5369635075c SHA-256: 89b99e7f72b9106cb09e0354d6788bd0da596719805e2df8f878bf1b780a770c
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, includes the target URL and keywords suggesting a lure related to medical information. The primary attack vector appears to be directing users to malicious infrastructure via these links.

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=anemia+de+celulas+falciformes+fisiopatologia+pdf
    • http://files.akesia.org/uploads/1/3/0/7/130776006/lulasezike_fixuxamobil.pdf
    • http://files.warmwindsshelties.com/uploads/1/3/1/8/131856877/17698e5519dbf44.pdf
    • http://juzofolo.thechurchofthelivinggod.com/uploads/1/3/1/4/131408024/purozomilem_xirebiwukomulo.pdf
    • http://files.beavertalescoffee.com/uploads/1/3/0/7/130738998/def47b38.pdf
    • http://kereb.prop1st.com/uploads/1/3/1/3/131380263/dupiruzagosat.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/56893356868.pdf
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/nutejudokiwexuzafowowo.pdf
    • https://cdn.shopify.com/s/files/1/0445/6205/5332/files/livre_avoir_confiance_en_soi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3073/files/mr_coffee_keurig_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/samupasuxomomazugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/list_of_important_days_in_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2874/files/bebalovab.pdf
    • https://cdn.shopify.com/s/files/1/0435/2131/0880/files/manual_de_cooperativismo_y_economia_solidaria.pdf
    • https://cdn.shopify.com/s/files/1/0429/6504/1311/files/how_to_update_r.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/88713838642.pdf
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/wordpress_logout_redirect.pdf
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/15738328903.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_off000064f7.bin
5720517c214189e8f236e4c894f7f2472e36cad90d43eefd8860d104a2ceddbf
pdf-font-stream PDF embedded font (sfnt) at offset 0x64F7 5344 bytes
font_01_sfnt_off00007701.bin
a5349153c05b04f5d83c19f07d691b08e769633b7d52d494cb39e680b22cc40b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7701 10544 bytes
font_02_sfnt_off00009ada.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9ADA 4324 bytes