Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4cc9accfac4ab3…

MALICIOUS

PDF

41.5 KB Created: 2020-08-20 11:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40720b3d95d4377d03ef2b911137c513 SHA-1: 04cf84ac44b43509d80c52858cd73c39ea59af04 SHA-256: 9e4cc9accfac4ab3be195e4079d4958bc89dd6202029f89bb6258b8a22b5c307
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, directing users to 'https://ttraff.cc/pify?keyword=basel+3+norms+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous links to other PDFs, likely to manipulate search engine results and distribute malicious content. The document body, though partially corrupted, contains the lure text 'Basel 3 norms pdf' and references the authoring application 'wkhtmltopdf', suggesting a document generated for deceptive purposes.

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=basel+3+norms+pdf
    • http://files.shoparworkshopbelmont.com/uploads/1/3/1/3/131398091/9989222.pdf
    • http://xuridasi.hopelutheranenderlin.org/uploads/1/3/1/4/131438233/fenezonixasi_dulidelisekados_murikagezovuko_narofow.pdf
    • http://files.cardconnectnetwork.com/uploads/1/3/1/3/131380440/mugujup.pdf
    • http://ramepu.livingoutofthisworld.com/uploads/1/3/1/8/131871727/nesarutazolim_wixakaxel_fogugimiku_fipanadovolileg.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/70872505546.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5190/files/69215262137.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17418425376.pdf
    • https://cdn.shopify.com/s/files/1/0434/8398/8125/files/implement_iterator_java.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8437/files/wewevajijuxani.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/26246576147.pdf
    • https://cdn.shopify.com/s/files/1/0431/0594/3701/files/rihanna_california_king_bed.pdf
    • https://cdn.shopify.com/s/files/1/0438/1959/7981/files/wuzepiriwazinemalabu.pdf
    • https://cdn.shopify.com/s/files/1/0444/1423/8887/files/xarosexe.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1085/files/basic_economics_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/47379456135.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sozolomunegodufedawugiwe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/pugajifobadufunuv.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_off0000634a.bin
f4459bf02baaeaf4e2d1a6bf5b9e2294c034c33434c7e18212fde7c7cd9f03c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x634A 5400 bytes
font_01_sfnt_off0000758a.bin
4dd29efad12005c44c01e62a9e6c53e4c5cc67cc13114533a882fcd63526331d
pdf-font-stream PDF embedded font (sfnt) at offset 0x758A 10600 bytes