Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2db10f3e68c4cc6…

MALICIOUS

PDF

46.7 KB Created: 2020-08-07 08:29:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1631d838fc25c92af36c2d9f1ff8aa48 SHA-1: f19a10e6b4dad9375366186e4af5832653e4e714 SHA-256: a2db10f3e68c4cc6a62eaa6c27d124c110b6e95a75b6b0525acf8398e489a975
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting an attempt to lure users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely for SEO manipulation to increase visibility of the malicious link.

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=halloween+worksheets+for+preschool+pdf
    • http://files.neenahpowerlifting.com/uploads/1/3/1/3/131398406/6992822.pdf
    • http://files.phillipsburgcomiccon.com/uploads/1/3/1/8/131856569/jumagepapije_nixonuzuxi_fawiwa.pdf
    • http://files.evanseleveninc.com/uploads/1/3/2/6/132681579/sojixikekimegosotoko.pdf
    • http://files.ironmenfootball.com/uploads/1/3/2/7/132712139/zaxatibawijidag.pdf
    • http://files.wellnesslifestylelounge.com/uploads/1/3/2/6/132681517/0fd770.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/kabowunujejopibiporukup.pdf
    • https://cdn.shopify.com/s/files/1/0428/6929/3215/files/63340183276.pdf
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/total_azolla_zs_46.pdf
    • https://cdn.shopify.com/s/files/1/0438/8657/5771/files/babulal_calendar_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/hypixel_ip_pe.pdf
    • https://cdn.shopify.com/s/files/1/0440/5824/7320/files/accounts_receivable_manager_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0437/1913/1285/files/zondervan_niv_study_bible_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/57466103081.pdf
    • https://cdn.shopify.com/s/files/1/0435/2684/8661/files/354815852.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/51754463676.pdf
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/nujutijutegijobakubosenil.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/
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/nujutijutegijobaku

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bd8.bin
a96fd6c84508910e6ab4e0662c92d534a0ad9af5236ddcaeedf4f8f73b185e19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD8 5100 bytes
font_01_sfnt_off00007d34.bin
a6e303d3fe75cb5af7ae954a1bdffe4780691e265df9a5fefe1b409589223702		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D34 10072 bytes
font_02_sfnt_off00009faf.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FAF 4324 bytes

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