Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a1749491bd96c4…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 05:10:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 439f65691a48fe021c2c873937cc337b SHA-1: 377f62213d9a2200e0a6bb36309cb1ddf22c8b0a SHA-256: 16a1749491bd96c4f0ba056b4dcba3bcdcf5ddf3d79f7adffb18f4cd1f9cce64
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector, which is a common tactic for phishing or malware distribution. The document body and embedded links suggest a lure to download or view content, likely leading to a malicious payload. The ML classifier strongly indicated maliciousness, supporting the presence of a 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.cc/wb?keyword=full%20length%20plays%20pdf%20free
    • http://files.helloweirdos.com/uploads/1/3/1/6/131606502/xerutofux_pasopabuw_getufowujese.pdf
    • http://files.luciwheelchair.com/uploads/1/3/0/7/130775893/vezetolugexogesekoja.pdf
    • http://diduke.gerardtalavera.com/uploads/1/3/2/7/132712323/424c53dc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/1958/2110/files/37493962185.pdf
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/91194018228.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/irs_publication_550.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kenetawibonilolususede.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/tofomap.pdf
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/40049781891.pdf
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/29566666071.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/rain_man_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0430/9234/4999/files/47124067352.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/2751802767.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/fojiriraba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7707/files/weider_body_works_exercise_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40429789840.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/wowegobib.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_off000068a2.bin
531ce2012aac04c2c1bc643885fa63f7747bf292232613d82c454a3e8534ec9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A2 5360 bytes
font_01_sfnt_off00007ae6.bin
95ec0458d352fdcb85a61ecd1a1e78ba2d318a26d4f698749d56dcf696d6904b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE6 10524 bytes

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