Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b75c0786fa93da…

MALICIOUS

PDF

45.7 KB Created: 2020-08-05 04:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f6e62fe92708182e1445b7167b10ea9 SHA-1: 1079a874648962267fa0bd35c60cda49b32b1a28 SHA-256: d7b75c0786fa93dabeafec359359ae41d34ec96ad762c572299346e1b85230d4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=descriptive+statistics+pdf'. Additionally, it exhibits a PDF link farm heuristic, with numerous external links, many hosted on Shopify. The document body is heavily obfuscated and contains embedded URLs, further supporting the malicious redirector finding. The primary intent appears to be directing users to malicious sites through deceptive 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=descriptive+statistics+pdf
    • http://files.purposedbackgrounds.org/uploads/1/3/2/6/132681378/burujedeto_tutasuju_dujakupogani.pdf
    • http://files.tasselbeads.com/uploads/1/3/1/4/131406248/labakamanogekegujuna.pdf
    • http://files.healthierhappiertogether.com/uploads/1/3/0/8/130874495/gosibejezebixikowero.pdf
    • http://files.rinjaniindah.com/uploads/1/3/1/4/131454143/3933427.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/xomisupi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6036/2392/files/birla_mutual_fund_stp_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/93482933851.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/xifajopixe.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/2016_subaru_forester_maintenance_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0435/6754/6527/files/97011045326.pdf
    • https://cdn.shopify.com/s/files/1/0429/2670/2755/files/falepokije.pdf
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/vatuzudijefisizedoli.pdf
    • https://cdn.shopify.com/s/files/1/0431/6915/3181/files/59472393852.pdf
    • https://cdn.shopify.com/s/files/1/0428/8416/9894/files/zelebufufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7417/files/jekiwagadofaxesoran.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/xonufapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5165/5076/files/78385838450.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/fepesotujoja.pdf
    • https://www.cancer.gov/coronavirus
    • 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_off00006919.bin
85a122cf81ac9338d288f68b379e305f1b14e1f90c6ec8ee50fef8aa390ad6a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6919 4748 bytes
font_01_sfnt_off00007958.bin
6ef477c606ba576e5ca27a0f951d5f1670e4e1e8aa90c1777c77c80ae189ff03
pdf-font-stream PDF embedded font (sfnt) at offset 0x7958 10220 bytes
font_02_sfnt_off00009bbc.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BBC 4324 bytes