Malicious PDF — malware analysis report

Static analysis result for SHA-256 0361f013099ca7ba…

MALICIOUS

PDF

62.3 KB Created: 2020-07-28 20:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 226dc551afc3fb2700c69760140e9b9a SHA-1: 82903d00532c393875504cd3abe1b27a804c1aaa SHA-256: 0361f013099ca7ba665c13ad913e68f84ce45020425e9e8d6d85c2de0a47ca94
154 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links points to a known malicious redirector. While the document body is heavily obfuscated, the presence of these links strongly suggests a malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself is used to host the malicious links.

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=platform+agnostic+synonym
    • http://files.belfastgdp.co.uk/uploads/1/3/1/4/131438002/1341829.pdf
    • http://files.burlingtontheatre.com/uploads/1/3/1/6/131637081/vulowowojajafeli.pdf
    • http://files.onedaymorefitness.com/uploads/1/3/0/7/130740298/7027145.pdf
    • http://files.nesmun20.com/uploads/1/3/0/9/130969699/sarukuzidozil-mapewot-jetilo-jolifutagezegu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/5726/4280/files/22433193693.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/rapuzodosotatesedupolag.pdf
    • https://cdn.shopify.com/s/files/1/0436/7984/2457/files/zojet.pdf
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/bibagaxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/musafopodesipagiwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/boviguriwilazux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19836568605.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/munaperoxosijub.pdf
    • https://cdn.shopify.com/s/files/1/0433/4367/5560/files/883453659.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2903/files/53233532117.pdf
    • https://cdn.shopify.com/s/files/1/0434/9440/8352/files/30600558621.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_off0000b846.bin
6bee4af0f2f6010ca17115f51eef950a426203e670aa0a0334ad9e0c2b670d68		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB846 4976 bytes
font_01_sfnt_off0000c90d.bin
6eaf09d1df4c943bc1417e5db49d13dd82fd8340cc246f5f25721130cd024ba1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC90D 10180 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.