Malicious PDF — malware analysis report

Static analysis result for SHA-256 da3756ce95457054…

MALICIOUS

PDF

52.4 KB Created: 2020-08-05 09:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92fc885c56a25042a093884c6360e00a SHA-1: 1263196922abeff27249aa4795bdeb6e34a004b3 SHA-256: da3756ce954570543d07152b09afe1c60b5e559bbb02a49836cb28266026d7fa
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=mathematics+book+10th+class+pdf'. This URL is presented within the document body, disguised as a link to a 'mathematics book 10th class pdf'. The document also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure the true malicious destination. 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.com/pify?keyword=mathematics+book+10th+class+pdf
    • http://files.grahamewaghorn.com/uploads/1/3/1/4/131408056/taxevirot.pdf
    • http://kezuju.siakyriakakos.com/uploads/1/3/1/3/131381078/mexad.pdf
    • http://files.theredroomproject.com/uploads/1/3/1/0/131070559/9294c2cd.pdf
    • http://nadoza.modernhistoryseminars.com/uploads/1/3/2/7/132740214/barufonudumudox-nibiva.pdf
    • http://files.mygrmobilervrepair.com/uploads/1/3/1/3/131382239/rokamokivexub_pusigebuba.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1175/files/50_sombras_mas_oscuras.pdf
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/74600902001.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/jozatamumalipirekunanuvuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/43467816323.pdf
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/wamuvalet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6521/3089/files/75963052540.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/injection_blow_molding.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/xizaworevisokiwusol.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/guxafitedadezokomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/zotofemalem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64255738852.pdf
    • https://cdn.shopify.com/s/files/1/0435/3435/2548/files/rutux.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000a705.bin
6238e0c93ef1fb580b72fb93fa69519942b13c9b629e9ec3ab8359de9910e938		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA705 8820 bytes
font_00_sfnt_off000064d1.bin
934fa7fdb6734ca99872547a7dd1c0df3d4d9aff00ebbfd5cdd569398b00dfe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 5384 bytes
font_01_sfnt_off0000771e.bin
3ac52d3eb3ed9405a659b9f89aa20fbc65950bbb6b33e34570941004ff70348b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x771E 9888 bytes
font_02_sfnt_off00009905.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9905 4324 bytes

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