Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a321494eaf16673…

MALICIOUS

PDF

57.8 KB Created: 2020-08-05 04:46:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56fb23de50ac7f7c71a5c1e00efe3f28 SHA-1: b0f2b1d81c14c3bf0243e7b71f65c68edc7bc612 SHA-256: 0a321494eaf166734e067a53cd760c39981ee35605d8086e3ed5eae76b6adf24
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a string that appears to be a lure related to 'creencias adventistas pdf resumen' and the malicious URL. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic, likely to obscure the malicious redirector.

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=28+creencias+adventistas+pdf+resumen
    • http://misexo.spectrumproject.org/uploads/1/3/1/6/131606094/topojogipelire.pdf
    • http://files.solosprinter.com/uploads/1/3/0/8/130813528/6179309.pdf
    • http://files.unraveledportland.com/uploads/1/3/1/1/131163540/673295.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/59909489441.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/gidakuse.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/48047510176.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/maslow_s_hierarchy_of_needs_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/5937/9357/files/xifizebafexajuperatitebuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/nunujatinividega.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/54250155968.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/9938124850.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/rejidibidowujoxilavodab.pdf
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/82830981008.pdf
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/32776947234.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/66001728590.pdf
    • https://cdn.shopify.com/s/files/1/0435/4061/1226/files/sotirinisenajit.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_off0000a4b5.bin
cb8dc90d7d001e1b62dfcdbbe833328d7e5d90448f998aed08dc46142068e040		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B5 5560 bytes
font_01_sfnt_off0000b790.bin
8c1afa07f794888dcf2f4760f5b986dba8582f08c2ad5d419f7f64ca692fde86		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB790 10260 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.