Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b9528688e468e6…

MALICIOUS

PDF

43.1 KB Created: 2020-08-23 00:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa06844d2bd20911a9403643b21b68c4 SHA-1: 00a448b94e268a2f9a5dc089569fac04e55ae68e SHA-256: 53b9528688e468e6f00babf8ae80732e8af1b0b360b6b8dcb33a7858252ef171
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=rangasthalam+movie++telugu+utorrent', is identified as a malicious redirector. The document body also contains this URL and other links to PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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.cc/pify?keyword=rangasthalam+movie++telugu+utorrent
    • http://mumeluxu.hauzofstyle.com/uploads/1/3/1/3/131398232/wagulad_lilitixojitava_gepesoxiwosi_befanovowinir.pdf
    • http://kukug.reneegdesigns.com/uploads/1/3/1/4/131406717/luxora.pdf
    • http://files.northofthepines.com/uploads/1/3/1/4/131453464/010d42f.pdf
    • https://cdn.shopify.com/s/files/1/0463/3414/8763/files/fisdap_ob_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/1742/7352/files/xixuvafubujedoxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/accpac_accounting_software_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/4567/3377/files/ca_intermediate_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3695/9139/files/brahmastra_book_by_ajay_gulati_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/fortnite_battle_royale_mobile_ios.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/96843196803.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/xavixulegimusafon.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_off00006c42.bin
a451b9c6f0e7275f946532d1d61e5a051879609178628e8feb6705c51c62cc4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C42 5168 bytes
font_01_sfnt_off00007db7.bin
86554aaaae970978546ef5177da65443e1854523dfb404365cdd77e85ff4f96e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB7 10028 bytes