Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a052b9f9f89aa6…

MALICIOUS

PDF

41.4 KB Created: 2020-08-03 15:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 727ac7c911e30e0d7f29d60ea91419de SHA-1: 704df9e9f3f3f814745c8bb5a135d77eea07cf1a SHA-256: 14a052b9f9f89aa6b6763be126f841af739fb42cf72bcdc78300bb5a316f1e16
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.com/pify?keyword=about+meditation+pdf. While no scripts were extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to harmful 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=about+meditation+pdf
    • http://files.thelongwellfiles.com/uploads/1/3/1/3/131382531/323278.pdf
    • http://files.michaelandsydneylovepi.com/uploads/1/3/0/8/130874246/5e228cecea244.pdf
    • http://files.digitalsimon.com/uploads/1/3/0/7/130775267/3533482.pdf
    • http://files.gammaetaomegaaka.org/uploads/1/3/1/3/131398010/3483613.pdf
    • http://pegexowin.powwowpitch.com/uploads/1/3/2/6/132696111/05bb9ef8cc2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/numogebekibomax.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5554/files/78534900548.pdf
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/41955636568.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/42262201332.pdf
    • https://cdn.shopify.com/s/files/1/0436/6496/5782/files/sefugawitaborav.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/23851177014.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdf
    • https://cdn.shopify.com/s/files/1/0429/4954/2047/files/94609336910.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/xofutijixiriwuk.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_off0000655b.bin
fa0cb0c2fabc047c572ff0f4baf958025090b4d3c61e8057d420c21934de79cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x655B 5012 bytes
font_01_sfnt_off00007651.bin
06794fa861fbb403cb9ff8cf5df5ebeae3344a9bfed8377bc9a677b3a40a77d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7651 10192 bytes