Malicious PDF — malware analysis report

Static analysis result for SHA-256 7236d2102c8a08ad…

MALICIOUS

PDF

59.6 KB Created: 2020-09-01 14:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0ae35258830e02246cb02813fdb9082 SHA-1: bc9aacab137e76db0525dc620252f526122f60e1 SHA-256: 7236d2102c8a08adaa74438246c94820513038af95fbfa55da9f93a1bc34f374
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=ng+tube+feeding+procedure+pdf'. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=ng+tube+feeding+procedure+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/35875452374.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5625/files/bopezijidazi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/la_biblia_peliculas_cristianas_completas.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/24183366497.pdf
    • https://static.usrfiles.com/ugd/ef7b09_b0b9a5c5634a403e8f40331eb768f094.pdf
    • https://static.usrfiles.com/ugd/756799_78aff8f37aa04b5d99c94bd954149c75.pdf
    • https://static.usrfiles.com/ugd/cc03df_0e8e5db130fb413080a51831e6df22b9.pdf
    • https://static.usrfiles.com/ugd/ab059d_9af67e417df348e4b927e20b7f6fdcc7.pdf
    • https://static.usrfiles.com/ugd/122077_8bb60e3fda3c407898fd874ba92ebf16.pdf
    • https://static.usrfiles.com/ugd/a48928_04bfd98819fb467b93b134c8ebbfb6d3.pdf
    • https://static.usrfiles.com/ugd/09273f_7819487ee19d45109f01e27c2b5ee6a4.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2381/files/access_bars_manual_barras_de_access.pdf
    • https://cdn.shopify.com/s/files/1/0430/9558/9013/files/zonixozirekawukuxerevig.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/7462548528.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_off0000ad6c.bin
b6de211f374d96b8a7a117ca7f1ffadb65273d162a2c382747dd67bb95f256f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6C 5012 bytes
font_01_sfnt_off0000be95.bin
e5cefda47a3f1960416e00a733a225549f63decfd4537db130b486a96856fbe6
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE95 10160 bytes