Malicious PDF — malware analysis report

Static analysis result for SHA-256 1295862bb2cdcd78…

MALICIOUS

PDF

32.8 KB Created: 2020-08-28 07:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0c1959b5b92dcdfa94c0a41b77e693a SHA-1: e5696ef8aa5a813f590c1865551e87ed0cb91ca7 SHA-256: 1295862bb2cdcd78832b710a5673dc0ecaeb63b699f3a5700bd9de7d83ad525b
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=shopping+cart+hero+4+unblocked'. The document body and embedded links suggest a lure to external, potentially malicious, content. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector.

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.com/pify?keyword=shopping+cart+hero+4+unblocked
    • http://zerewex.newlifeprestwick.com/uploads/1/3/1/0/131070874/zijizodut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/agriculture_durable_en_algerie.pdf
    • https://cdn.shopify.com/s/files/1/0435/6790/6975/files/mizigunopelenidipez.pdf
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/35211758325.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/2014_jeep_patriot_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/6184874631.pdf
    • https://cdn.shopify.com/s/files/1/0431/1878/8774/files/physiology_of_respiration_in_mammals.pdf
    • https://cdn.shopify.com/s/files/1/0433/0042/1790/files/convertir_de_a_word_gratis_y_rapido_en_linea.pdf
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/75215659721.pdf
    • https://cdn.shopify.com/s/files/1/0435/9910/2115/files/74040311956.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigemeziguvego.pdf
    • https://cdn.shopify.com/s/files/1/0440/5175/9269/files/44891568440.pdf
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/11638810732.pdf
    • https://cdn.shopify.com/s/files/1/0437/8738/7037/files/84112887617.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/dunobiribuxorubiwiputug.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_off00004618.bin
6046406d560539e20a0cce8a1bd4908da353afc40ac0ab4706bb19ea524d7a25
pdf-font-stream PDF embedded font (sfnt) at offset 0x4618 5552 bytes
font_01_sfnt_off000058e3.bin
f1c4901c37cb43696bc8289044b98ea5e8e59db187328514ebea6f07feb03cf4
pdf-font-stream PDF embedded font (sfnt) at offset 0x58E3 8620 bytes