Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d34906e569c48d…

MALICIOUS

PDF

44.2 KB Created: 2020-08-15 21:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f62e6e9d1f4020d6ac94bc90407b62d SHA-1: 0dad0a3f4496fcb0c5943832d2f7893d91b748da SHA-256: 09d34906e569c48dfbe2095dbdd3826aef7a0722b5f7423465d8a3bd8d13251b
154 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body also contains this URL, suggesting an attempt to lure the user to a malicious site. While the document itself does not contain executable scripts, the presence of a malicious redirector link indicates a phishing or scam attempt.

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.com/wb?keyword=ciclo%20teniase%20pdf
    • http://files.rgcgymnastics.org/uploads/1/3/0/7/130739926/2637708.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/video_ts_to_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0438/9873/2696/files/exercise_program_at_home.pdf
    • https://cdn.shopify.com/s/files/1/0437/1732/9064/files/fosevumejusikuzid.pdf
    • https://cdn.shopify.com/s/files/1/0434/6871/8242/files/understanding_business_ethics.pdf
    • https://cdn.shopify.com/s/files/1/0431/1305/4359/files/85432190381.pdf
    • https://cdn.shopify.com/s/files/1/0440/6083/6005/files/5e_protection_domain.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/git_overwrite_local.pdf
    • https://cdn.shopify.com/s/files/1/0440/0313/1542/files/94267079292.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/78489451855.pdf
    • https://cdn.shopify.com/s/files/1/0433/4996/6998/files/94708015503.pdf
    • https://cdn.shopify.com/s/files/1/0432/4940/2016/files/gapuzedojegigofosaxiwokat.pdf
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/59498784635.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_off00006d0e.bin
8725ee50864f388b2ca7e7151c86e30bc170c4d5e81809082bdd5464cc208629
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0E 4960 bytes
font_01_sfnt_off00007df1.bin
fd8c16aa8292acc14f76e4099443a69d38ac72705f53c6e8c1e91a28ff906f24
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF1 12340 bytes