Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee115a58934aa5c…

MALICIOUS

PDF

34.2 KB Created: 2020-08-29 15:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd603f4962ad50136e5e5079c642e459 SHA-1: 41b0c9c477d9762ea0a33bce47bf45554c21abf0 SHA-256: dee115a58934aa5c17fcabee19ff771a9a39774a79e1790ad3be4ce16569be03
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=jawker+dhan+full+movie'. The document body also contains this URL, presented as a movie title, suggesting a lure to trick users into clicking the link. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com.

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/wix?keyword=jawker+dhan+full+movie
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/astm_d638_01.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5974/files/translate_chinese_to_english.pdf
    • https://cdn.shopify.com/s/files/1/0464/6433/6040/files/n950f_u7_root_android_9_pie.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/cell_phone_tracker_software_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/that_mini_heart_attack_when_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/java_program_to_implement_simple_calculator.pdf
    • https://static.usrfiles.com/ugd/b8c837_69260b6ea10e4c69897655aa39b009b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_649d9b1d00754687bfb4efdc3589a2aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e98666e6881420ca5d92f3b895a63e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_2abca645f0c7424a96539370076e6bf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_83df093e9ddf49b2bd5c8590211b8142.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004904.bin
68c7e886d461a2416a3583f3f9835ff8bf73fb5dc675b343ff300a9ecbb86cf7
pdf-font-stream PDF embedded font (sfnt) at offset 0x4904 5176 bytes
font_01_sfnt_off00005a8e.bin
1fd6b6d8aff51ddacc7f8f6f9ef16cc57a35019d641b31ffac76b47d940cdbf3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8E 9932 bytes