Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fed7d176470b018…

MALICIOUS

PDF

55.8 KB Created: 2020-08-05 06:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58146bd3551f087ee27640aef44768dd SHA-1: a2b172c56e537e092f7bdd5f597783aa8045ab87 SHA-256: 5fed7d176470b01856b648a370cda3dded662fea2444031f7bb6d351a3bd59e2
162 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic identifying a redirector link to 'ttraff.com'. This suggests the document is designed to lead users to malicious websites, likely for phishing or to download further malware. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=banachek+psychokinetic+touches+pdf
    • http://files.koolcompanies.com/uploads/1/3/2/7/132741764/nojemivipawitalopip.pdf
    • http://files.simplicitiesoftoday.com/uploads/1/3/0/9/130969472/zebefizenadedep.pdf
    • http://files.simonperathoner.com/uploads/1/3/2/7/132710704/vegoxabeda.pdf
    • http://files.photoannaclaire.com/uploads/1/3/0/7/130775205/25db29d335329.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7550/files/cracking_the_pm_interview_github.pdf
    • https://cdn.shopify.com/s/files/1/0429/5124/5987/files/75670144699.pdf
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/28828977986.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/16109872826.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/aggregate_testing_methods.pdf
    • https://cdn.shopify.com/s/files/1/0428/3564/0476/files/45250387085.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/fio_test_scripts.pdf
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/blacksmith_level_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8209/6541/files/accuweather_winston-_salem_nc.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2490/files/59326711332.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/14087713156.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/kisesojarovetutepemezajo.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007186.bin
2040fabdfcc0ea5e6d65a88a8206fd35d8f23116a56f966e24727f37b8f444d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7186 5328 bytes
font_01_sfnt_off000083aa.bin
7464ff43ae039826640181b8b9393962413186ea9117fa1976f0c7030f6bc4ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AA 4064 bytes
font_02_sfnt_off0000933d.bin
d24f1db0a152283ee7d140a8c3188e0d45a907f2869104e082ea05a04dc959fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x933D 11172 bytes
font_03_sfnt_off0000b995.bin
eacce040cd7ddbe5bd638eb0b7e4c358aca07d696b0c16e8f14a8bff2cecbd8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB995 16756 bytes

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