Malicious PDF — malware analysis report

Static analysis result for SHA-256 0484e38d04065dd2…

MALICIOUS

PDF

45.7 KB Created: 2020-09-04 02:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffc8376150a72185c695551ebc7cabbd SHA-1: 6e0b1ce5994f56653a3d17fae16b640a7a4b1116 SHA-256: 0484e38d04065dd270fa2defb1f5113a648c274b8f72a4ae5cb35180768dea5b
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 pointing to shopify.com domains, but the primary malicious link is `https://ttraff.link/wix?keyword=program+management+job+description+template`. This link is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains text related to job descriptions and the malicious URL, suggesting a phishing or malware distribution lure. No scripts were extracted, but the presence of a malicious redirector and a link farm indicates a high likelihood of 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.link/wix?keyword=program+management+job+description+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0457/4088/4124/files/43390491787.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1045/files/biodiversity_conservation_and_management_in_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/zineru.pdf
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/kumatiniwipakek.pdf
    • https://cdn.shopify.com/s/files/1/0429/4000/6559/files/kebexumowamoreti.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3866/files/andaman_and_nicobar_islands_tourism_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0435/5185/0647/files/advanced_java_tutorials_point.pdf
    • https://static.usrfiles.com/ugd/0c268c_4446dfe111c143a9a32140bbcc06c5ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_255a84215a284ca88d45dcb08a210a2e.pdf
    • https://static.usrfiles.com/ugd/c7a620_10dc1ba569c34d8d9f6d527d240bf2a8.pdf
    • https://static.usrfiles.com/ugd/bfbc46_5b2f27a45ce943cab0cc6641abb96e51.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_4c2c44d2417d41f9b04d4f13ba1f007e.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_off000073b8.bin
025fe1b244a3fb95dccb1f395c3c11f5f6f71e2ef67b53017982368a68670169
pdf-font-stream PDF embedded font (sfnt) at offset 0x73B8 5608 bytes
font_01_sfnt_off000086b3.bin
d79aeb5b1d884d530ff286299b211aae1569002e997731437162f1f7ff196cc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x86B3 10352 bytes