Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e69368894059aed…

MALICIOUS

PDF

41.1 KB Created: 2020-08-07 02:58:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b15cef57b9a3c0dc90b24b50b7d2af28 SHA-1: de3d26bef8dbd87a0ab6a5e8f753a577108b027a SHA-256: 5e69368894059aed4b37330aa823106c54f667333e48941ca4d05aefcb5c22c8
154 Risk Score

Malware Insights

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

This PDF file contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=simple+bakery+business+plan+pdf`. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious infrastructure under the guise of a business plan. The ML classifier strongly indicates maliciousness, and the presence of a link farm further supports this assessment.

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=simple+bakery+business+plan+pdf
    • http://files.mylunarsign.com/uploads/1/3/1/8/131857482/6fcae3.pdf
    • http://files.andreas-skincare-bodytherapy.com/uploads/1/3/1/3/131383821/xikuxiluzunutokuzux.pdf
    • http://files.pfcmooremess.com/uploads/1/3/0/7/130776072/65264bc54.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/4295/4650/files/94386564743.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/59292585806.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/93811323620.pdf
    • https://cdn.shopify.com/s/files/1/0438/5911/6182/files/toroputatedugareniz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5962/6655/files/sepujap.pdf
    • https://cdn.shopify.com/s/files/1/0440/6401/4486/files/acchi_kocchi_tsumiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/72200926728.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/mupuxuxoba.pdf
    • https://cdn.shopify.com/s/files/1/0437/9266/2688/files/libro_materialismo_historico.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegofegomena.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3383/files/munamorasudusav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5089/files/9473828930.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_off0000623c.bin
844d302dc09306517e4dae856183de2d8bed52d7802316ec864462f559a89358
pdf-font-stream PDF embedded font (sfnt) at offset 0x623C 5596 bytes
font_01_sfnt_off00007530.bin
947760f3c75cc5c1e1488b8877c75b9c93f6fb58cebc43d05c341111855d827b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7530 10048 bytes