Malicious PDF — malware analysis report

Static analysis result for SHA-256 247d732c2ca24018…

MALICIOUS

PDF

37.9 KB Created: 2020-10-05 00:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: aa3995c0f5b2f6765c83e32c38696d30 SHA-1: 9f0b1c58e1635405a991ce98f7f4d6facbc5f9e2 SHA-256: 247d732c2ca240182c430aceda57eeb151587f51f5fc8a014d229f9b9140972b
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=super+smash+flash+2+not+blocked+school'. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the PDF structure and embedded link strongly suggest a phishing or scam attempt to lure users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=super+smash+flash+2+not+blocked+school In PDF document text
    • https://site-1036803.mozfiles.com/files/1036803/zobulavitunezakilibixuv.pdfIn PDF document text
    • https://site-1036651.mozfiles.com/files/1036651/balijarozaforaxo.pdfIn PDF document text
    • https://site-1038323.mozfiles.com/files/1038323/3414606071.pdfIn PDF document text
    • https://site-1041688.mozfiles.com/files/1041688/19142350071.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/albert_l._lord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/greatest_common_factor_of_monomials_worksheet_answers_milliken_publishing_company.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/govt_jobs_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5262/2236/files/monitorear_red_local_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7523/4720/files/good_boomilever_designs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/nugasoboliletixuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1871/0951/files/depopotunufesalugirer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d31d5777-42ce-40ae-95af-2f7ce9c70851/34027141727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/976d6cd2-454f-447e-9899-94562fe2dae4/9953007151.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54A6 5832 bytes
SHA-256: 64f3c1d7fe428d813a0520311c20c7b0330b09bcaa3a2b3fa309ba1f3fe47ba6
font_01_sfnt_off0000684d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684D 10060 bytes
SHA-256: f76617526e4a2deacaf4694fbb143c7cacbec5ab72880fd59b7ade6026a60fc0

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