Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b98cc7d3f155399…

MALICIOUS

PDF

76.0 KB Created: 2020-08-22 05:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5801eb15aa39dd7e26f1b13ca06f2cce SHA-1: df5c250dc0da1e9a95561268badf7010f91ee947 SHA-256: 8b98cc7d3f1553993ea8d1989ce6a559fd2e192377d74c41cd7b1c1e46db0552
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm and a redirector. The primary malicious URL identified is ttraff.ru, which is used to redirect to other URLs, including a Shopify-hosted PDF. This suggests a phishing or malicious redirection scheme designed to obscure the ultimate destination.

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=bovine+spongiform+encephalopathy+encephalitis
    • http://files.buggybarnmuseum.com/uploads/1/3/1/0/131069887/7927040.pdf
    • http://files.ohmyrockport.com/uploads/1/3/1/3/131398171/4992475.pdf
    • http://files.dannyscholtze.com/uploads/1/3/1/0/131069781/rugafilaguzumokide.pdf
    • http://files.bwitched.com.au/uploads/1/3/0/7/130776110/fugonu.pdf
    • http://faguf.kangarooquest.com/uploads/1/3/1/4/131453215/pudevutoxelose.pdf
    • http://files.dannyscholtze.com/uploads/1/3/1/0/131069781/rug
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/enlightenment_now_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/tamiloropi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7484/files/buku_manifesto_pakatan_harapan.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/kimesafuto.pdf
    • https://cdn.shopify.com/s/files/1/0437/4760/6679/files/config_cs_global_offensive.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9711/files/zizuna.pdf
    • https://cdn.shopify.com/s/files/1/0438/0576/9888/files/32399424313.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/subigatexoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/jogigudixazudakujanevoruv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/11801334784.pdf
    • https://cdn.shopify.com/s/files/1/0438/5472/5270/files/96405122644.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_off0000de6f.bin
89350c8f0c24fc6a9da2e5a40b0188e7b284f318f9cb9036088d272df14578b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6F 5428 bytes
font_01_sfnt_off0000f0c1.bin
8178070e77776f6cab7b6bdd5ac5432e0b4d682101b4f4cbe338e67ecbd344e5
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C1 10404 bytes
font_02_sfnt_off0001146a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1146A 4324 bytes