Malicious PDF — malware analysis report

Static analysis result for SHA-256 63806ed256b3695e…

MALICIOUS

PDF

32.8 KB Created: 2020-09-02 12:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 602ad7ac4937aee56e1644f5dc4c259e SHA-1: 53b554a396a7d5f5cb8eccbe3287f17a65202341 SHA-256: 63806ed256b3695e42b016f75de2fb6c88f529994238aa6aae54e88ba5644fb3
154 Risk Score

Malware Insights

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

This PDF document contains embedded links that redirect to malicious infrastructure, specifically a redirector at 'ttraff.link'. The document body text and embedded links suggest a lure to trick users into clicking through to potentially harmful content. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm strategy to distribute malicious content.

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/pify?keyword=odia+song+ringtone++new
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0467/5701/9811/files/grade_4_math_worksheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/fufasigone.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/bnficiaire_effectif_tunisie.pdf
    • https://cdn.shopify.com/s/files/1/0436/1581/3795/files/bomba_autocebante_shimge.pdf
    • https://static.usrfiles.com/ugd/384ea4_d3b7c344884540c9ace8b298fbe84968.pdf
    • https://static.usrfiles.com/ugd/a107db_129a63f7ba0a4c8baf3c5f566498608d.pdf
    • https://static.usrfiles.com/ugd/fb83f1_2fa79bb46aae486285a4b04eaa31f5b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad66316cd118405baa24261e50173a03.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/50_shades_of_grey_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/taxor.pdf
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/77332221829.pdf
    • https://cdn.shopify.com/s/files/1/0434/0157/6604/files/dotefobaropegaf.pdf
    • https://static.usrfiles.com/ugd/34e21e_120a62c2fcf24584b8789e105d699047.pdf
    • https://static.usrfiles.com/ugd/9cb927_538ad60a2f6546d3b2acc816e5e3aadb.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_off00004456.bin
8a3ea165e20f0d03779d045b634ddb7fdc632d8454ebb2264ae38df312e5e634
pdf-font-stream PDF embedded font (sfnt) at offset 0x4456 5080 bytes
font_01_sfnt_off000055b6.bin
e4dec1adb38dc5582bc22d56958764b3644fd6727d2341f9c9c083055b0cd085
pdf-font-stream PDF embedded font (sfnt) at offset 0x55B6 9712 bytes