Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d094aa75a79769…

MALICIOUS

PDF

65.4 KB Created: 2020-08-07 23:05:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a9ad6ffe484f114c2e50084d22097be SHA-1: 5eb6d688a7fca0ab7c7479d61360e67708ce27aa SHA-256: 18d094aa75a79769abacfd1adb62d95009e9caefbf836b88ebf42ea1a8aab956
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. This suggests the document is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=cabala+esoterica+pdf
    • http://files.winwithwill.com/uploads/1/3/0/7/130776726/kenumodofedatorob.pdf
    • http://files.swainsborojaycees.com/uploads/1/3/1/6/131607310/2439813.pdf
    • http://files.gatheringofghouls.com/uploads/1/3/1/1/131164479/2b08d3f8345b.pdf
    • http://files.fcstnebraska.com/uploads/1/3/2/7/132740277/suvuvolubevabo-sunuridopele.pdf
    • http://files.maeganprovan.com/uploads/1/3/1/0/131070216/3ce89d590a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/fupavakosow.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5789/files/9126252569.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/aqa_psychology_a_level_textbook_year_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/6220/6357/files/4999551985.pdf
    • https://cdn.shopify.com/s/files/1/0440/9799/4904/files/sisuporigadi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4434/7799/files/nedofiwekejikiwopesagitiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/48225857933.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/abbyy_transformer_3._0_online.pdf
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/kapugofisarusonakeliko.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0935/files/xatagomekasosogomumitise.pdf
    • https://cdn.shopify.com/s/files/1/0434/0904/7717/files/zudazugiwuz.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_off0000c487.bin
49b9e4b4aa2795022c3a34b0546f4134bbb7107112cceb94e8319f076a01f8bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xC487 5196 bytes
font_01_sfnt_off0000d634.bin
9b84505423a481806ce4d5732d108b2aa5a693636f8b5e3adb5700b550e3952a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD634 10040 bytes