Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db67924a390e4ca…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 14:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef096f70bb49b56c1de86764dbcfb61c SHA-1: 15ec9bbafa29612bd65040ebe895058f1a0ada16 SHA-256: 7db67924a390e4ca7d375108cc040e005345e35dec22c71155a8fd5da44139da
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body, though partially obfuscated, includes text related to 'blueprint education answers class 9' and a URL that appears to be part of a link farm. This suggests a phishing or scam attempt designed to trick users into visiting malicious sites by masquerading as educational content.

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.cc/pify?keyword=blueprint+education+answers+class+9
    • http://dogubev.dixondoesdoodles.com/uploads/1/3/1/0/131070374/fuxopid.pdf
    • http://files.allisonroseentertainment.com/uploads/1/3/0/7/130738741/xorikij.pdf
    • http://files.elainehunter.com/uploads/1/3/1/4/131409090/rugiveki-wuwonuxomiru.pdf
    • http://files.truewealthfg.com/uploads/1/3/2/7/132710687/migejowo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1662/6082/files/wigefizoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/pasijesoka.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6411/files/alphabet_anglais_francais.pdf
    • https://cdn.shopify.com/s/files/1/0434/7291/2549/files/ponapodobepurasijiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8833/files/miliga.pdf
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/manual_practico_biomagnetismo_holistico.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/29885745632.pdf
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/xonobemapa.pdf
    • https://cdn.shopify.com/s/files/1/0440/1856/5270/files/65733664071.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_off0000609e.bin
79f301c380c9258dc72e3b0f1d5daff0fb7aaee724912fa5cce16f1282cfaaf4
pdf-font-stream PDF embedded font (sfnt) at offset 0x609E 5364 bytes
font_01_sfnt_off000072f4.bin
5fabb320d768ee86b360d20bf1a0fbe4067bd3ac77d65a3c0fa24b4695eae890
pdf-font-stream PDF embedded font (sfnt) at offset 0x72F4 10252 bytes