Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a0c2d2a42233d8…

MALICIOUS

PDF

46.9 KB Created: 2020-07-28 13:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62e3ceadab7f2bf579adda40c639090e SHA-1: 15822b540ac706a460829d2ba10f43d40d1eda2c SHA-256: 14a0c2d2a42233d8b5f9ea091e4becc33b5967a3cbae511fb66833f8d2603476
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high number of embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body and embedded artifacts do not provide further context on the specific payload or intent beyond the malicious links.

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.ru/pify?keyword=batch+mixing+plant+pdf
    • http://files.moobaastrongmangym.com/uploads/1/3/1/4/131453725/wetoramoxato.pdf
    • http://files.pearlywhitespediatricdentistry.com/uploads/1/3/2/7/132741397/wezewitofo.pdf
    • http://files.littleladyo.com/uploads/1/3/0/9/130969004/furopigolijur.pdf
    • http://files.reedsmeatprocessing.com/uploads/1/3/0/8/130873810/dajezexup-rawojoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/goweboruvol.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/5853490726.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/xogosufaropegugasorukasib.pdf
    • https://cdn.shopify.com/s/files/1/0435/7668/8799/files/nividanebagotoleb.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/xerizopaje.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/bufafapixeruj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/paveroviraxos.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/5166355590.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/nafaxoxisifazotumal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.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_off00007a95.bin
8728b0668a024ea0f3d9b828c045c080b3851c3173343a22e89c60f5c489a665
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A95 4972 bytes
font_01_sfnt_off00008b5d.bin
163d0ce3769242f35d48a5c0719c5c3c8638044c171cee6fd71141966841c9ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5D 10248 bytes