Malicious PDF — malware analysis report

Static analysis result for SHA-256 07abd3fabaad46b9…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 01:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d575b725e673559dd0455fd52c1fdc7a SHA-1: a28b8f88befc742693c91b96d1e40d036222452c SHA-256: 07abd3fabaad46b97923596eafbe98bcf19a200916570ce1a7265824c0461c76
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=clicker+heroes+codes+2019', is identified as a malicious redirector. The document body text also contains this URL, suggesting an attempt to trick users into clicking it. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy. No scripts were extracted, but the PDF structure and embedded links point to a phishing or redirection attack.

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=clicker+heroes+codes+2019
    • http://files.sixdegreeswriter.com/uploads/1/3/0/9/130969885/bimasi_nipebapunog.pdf
    • http://files.pureblissacademy.com/uploads/1/3/0/7/130775402/lemekisu_pipunukaji_logok.pdf
    • http://files.carmenjabaloyes.com/uploads/1/3/1/3/131380916/nixal.pdf
    • http://files.hellovetmed.com/uploads/1/3/1/0/131069766/8f90fa1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/mewuzizoxox.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/gorobutiguvonozi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/kufivejofejutirogutamexan.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/24307803434.pdf
    • https://cdn.shopify.com/s/files/1/0435/1832/8991/files/turdy_point_buck.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/wepiwuxirutasawomotijixar.pdf
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/87549725663.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/duniruviruvum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36103472339.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/fovapinobise.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_off00006903.bin
7e461f5cb2a78f431cab19790d22c2a6fb7ebaa8cd28af0e9b16fa578e5eb810
pdf-font-stream PDF embedded font (sfnt) at offset 0x6903 5268 bytes
font_01_sfnt_off00007aed.bin
bfda2fc8cf1a1196582368f0e0570fa889be3a626c7e3d7df090a641dba36f47
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AED 10620 bytes