Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d7fb051606806d7…

MALICIOUS

PDF

49.2 KB Created: 2020-07-29 00:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ded0800c02987b69ed88ff98c2d3b74 SHA-1: f4f2c99b09fd58cb571f1aab17f79eb284045cbf SHA-256: 6d7fb051606806d74e762fea06771a7df957d20324b24cadb4bb9a6572ff4370
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be related to 'Deepak Chopra synchrodestiny pdf' and was generated by wkhtmltopdf, suggesting a lure document. The presence of numerous external PDF links, many pointing to Shopify, further supports a link farm or redirection scheme.

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=deepak+chopra+synchrodestiny+pdf
    • http://files.douglasmullerdesigns.com/uploads/1/3/1/0/131069764/f8cae956d.pdf
    • http://files.manishaanantharaman.com/uploads/1/3/0/7/130740141/dumirutufedoxanowobi.pdf
    • http://files.ringercenter.net/uploads/1/3/1/6/131606694/83959.pdf
    • http://files.badgrrlbrenda.com/uploads/1/3/0/7/130776640/segewamulerija.pdf
    • http://files.myriversidefrenchcottage.com/uploads/1/3/1/8/131872238/715464e79640f11.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/49090269735.pdf
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/sanek.pdf
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/vozuwomamureniwuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/5856/8097/files/libugekek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30812088679.pdf
    • https://cdn.shopify.com/s/files/1/0437/3177/9733/files/73794772378.pdf
    • https://cdn.shopify.com/s/files/1/0432/8338/2427/files/kawezoxekeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/25967616736.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/47070969064.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6143/files/fubarewad.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/fepuxif.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_off000076fe.bin
25d0ca657e1a394813482be1ef9409b9731d60028f04ad6016ebf96d261c95fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x76FE 5164 bytes
font_01_sfnt_off00008887.bin
13e95ba94c9b4813bbffa7e822d67ef9054d3bef7d884a5d3df5424b06c0f15a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8887 14916 bytes