Malicious PDF — malware analysis report

Static analysis result for SHA-256 68d9150e3fdcc8b5…

MALICIOUS

PDF

41.5 KB Created: 2020-07-10 07:18:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85a0ee2c3766e4a9e5fc6fb7f0cdc0a0 SHA-1: 6b2c15e498463964701272346e4dfd3863ce46ee SHA-256: 68d9150e3fdcc8b5e22ff16b88e836732f66a1d2342346ad3e7382cba8714df1
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources that appear to be part of a link farm designed to distribute malicious content. The primary link, 'https://ttraff.com/wb?keyword=pearson%20ib%20history%20cold%20war%20pdf', is identified as a malicious redirector. The document's structure and the presence of numerous PDF links suggest an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

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/wb?keyword=pearson%20ib%20history%20cold%20war%20pdf
    • http://files.icdriversedge.com/uploads/1/3/1/3/131398164/1720343.pdf
    • http://files.lennoxwellness.com/uploads/1/3/1/3/131378921/salarod.pdf
    • http://files.bmorewell.com/uploads/1/3/1/4/131406433/kakodutoxomazujalen.pdf
    • http://files.tidygardensfencing.com/uploads/1/3/0/7/130774990/1813824.pdf
    • http://files.evaatkinson.com/uploads/1/3/0/8/130874541/totovala.pdf
    • http://files.libercloud.com/uploads/1/3/2/3/132303023/vifavokuji_ruxebanijo_satalosadixonuf.pdf
    • http://files.soheilaazadi.com/uploads/1/3/0/9/130969498/bumit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fovuweba408505925.files.wordpress.com/2020/06/kixezeganozekerejofevolig.pdf
    • https://topinideteba.files.wordpress.com/2020/06/ritafezezilana.pdf
    • https://poxabageg.files.wordpress.com/2020/06/loduworazagofabo.pdf
    • https://dimexemivega.files.wordpress.com/2020/07/39368471195.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexikebesadunav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32600433864.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.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_off0000634a.bin
280d1bbf5c0d058e1b312e10deeff6d49416fa76005eb1e42203e343b00bd4e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x634A 5368 bytes
font_01_sfnt_off00007588.bin
084b956a29b202f07dc6f27430c189030f1683711d2ebb58611e4b762d571f14
pdf-font-stream PDF embedded font (sfnt) at offset 0x7588 10548 bytes