Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c23741b7b6ab1e…

MALICIOUS

PDF

35.2 KB Created: 2020-08-18 16:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deaba68caed566eede1bf0c28f0978ad SHA-1: ed22f789fec3804ca37b601f8b2c57cbdc57b3bf SHA-256: e3c23741b7b6ab1e50a3e19c1d90bad35e3cb81885f1f20e57462fb81949b14d
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, https://ttraff.com/pify?keyword=new+odia+film+dj+song++2018, is identified as a known malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lure users to malicious content, likely for phishing or malware distribution.

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=new+odia+film+dj+song++2018
    • http://files.pimaboutique.com/uploads/1/3/1/6/131637271/disuvufobazifaruwo.pdf
    • http://kuxefe.solidarityflag.com/uploads/1/3/1/4/131437502/wikarasitovi-vobagurudom-popefevemuletuj-tavunavidulin.pdf
    • http://files.sdlsf.org/uploads/1/3/0/7/130775987/317473da7b1.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/generate_your_business_idea.pdf
    • https://cdn.shopify.com/s/files/1/0440/9180/1752/files/cell_cycle_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/91368298494.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/bejasawida.pdf
    • https://cdn.shopify.com/s/files/1/0435/5637/2641/files/rufilalulobenemaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/92920182245.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0807/files/86884503706.pdf
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/vemobixiraduteledafofos.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/advaita_vedanta_a_philosophical_reconstruction.pdf
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/prefix_command_dbm.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_off000048e4.bin
aa6cfb228c7b00122ab7b560653da6b5ab910b4a2082112ec83d1ce3ca74101c
pdf-font-stream PDF embedded font (sfnt) at offset 0x48E4 5788 bytes
font_01_sfnt_off00005cab.bin
24adbbf58c6a340d184715d5c543a6c90a07db85953059f3c27aa21defd2ab61
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAB 10572 bytes