Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b719adacb090e08…

MALICIOUS

PDF

46.4 KB Created: 2020-08-20 00:01:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36e175385837ae1e6857eff30db9e921 SHA-1: 940ff05413341443b44b5e0292222524e799dea2 SHA-256: 0b719adacb090e08fd31d95b2d769a538d2c52d4296ebaa17c54dbf42f4c334b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One prominent link redirects to 'ttraff.cc', known malicious infrastructure, indicating a phishing or redirection attempt. The document body, though obfuscated, contains the target URL, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=global+reporting+initiative+g4+sustainability+reporting+guidelines
    • http://files.institutionalamez.org/uploads/1/3/1/0/131070207/luvavafa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/lasukesa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9300/7272/files/lowerebejavofiwojojuse.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/25616363493.pdf
    • https://cdn.shopify.com/s/files/1/0429/4007/2092/files/88737191897.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/41854743071.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/kuvadufivorarizal.pdf
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/quimica_inorganica_resumo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2702/8375/files/36493847.pdf
    • https://cdn.shopify.com/s/files/1/0431/3710/6087/files/90858744227.pdf
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/fuerteventura_holiday_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5292/files/bookworm_adventures_3_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0436/4664/8473/files/crack_ielts_in_a_flash_reading.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007605.bin
1464c1c3afaa9300d39b0726aaeb7afff89a13d566b4c3c813828d52460a5c02
pdf-font-stream PDF embedded font (sfnt) at offset 0x7605 5548 bytes
font_01_sfnt_off00008900.bin
d7bc3a029211f3027ba918da22c27e753fa786dbda888b96810935df8e4a8cfc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8900 10176 bytes