Malicious PDF — malware analysis report

Static analysis result for SHA-256 88fb75bb0c285e18…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 08:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eaab3af44663e159805b77b3605619e SHA-1: 915d022c8f8633935cb83206156dcf50898bda5e SHA-256: 88fb75bb0c285e184349f2a558a7490afddf6ade1d17bcf748259d1ee2c609f2
120 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though corrupted, contains the URL https://ttraff.ru/pify?keyword=interim+report+aged+care, which is also flagged as a malicious redirector. The file also exhibits a PDF link farm heuristic, suggesting it's part of a larger SEO poisoning campaign to distribute malicious 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.ru/pify?keyword=interim+report+aged+care
    • http://files.shunsart.com/uploads/1/3/1/8/131871854/wigaloraziforuviv.pdf
    • http://puluf.nashville-reiki.com/uploads/1/3/0/9/130969723/terowus.pdf
    • http://files.westfielddentalpa.com/uploads/1/3/2/7/132741052/sesuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/acretismo_placentario.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/94396941802.pdf
    • https://cdn.shopify.com/s/files/1/0432/2476/0488/files/steam_download_starting_and_stopping.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/juwamufapatuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5029/5708/files/osrs_desert_treasure_quick_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/37429819335.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/xemekurarukefenexos.pdf
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/kaduripujimipuzaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/wojaxozepomelali.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/77050930618.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/tomidofakurifajino.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_off00005f96.bin
9459bb866efc6a958543add8b412323bc740516301c75e949165ac19db51c9fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F96 5120 bytes
font_01_sfnt_off000070da.bin
f557a564cb16b79e45b989a98f9df29d048db8631d96f8d041a6f367f4aeb741		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DA 10380 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.