Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd8da3ecfe8b57b7…

MALICIOUS

PDF

44.7 KB Created: 2020-08-18 15:53:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cffb4936923d87664ce5314d2ff12d3b SHA-1: fdfc602c1f1ef6ec84b9bb9955718cd5c3937a34 SHA-256: fd8da3ecfe8b57b7b02129c8415c30886e87bee13b244f36ba415cc2031605b3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=pokemon+game+for+android+mobile', is designed to lure users with a fake download offer. The document also features a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious content.

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/pify?keyword=pokemon+game+for+android+mobile In PDF document text
    • http://files.patsendangeredanimals.com/uploads/1/3/2/7/132740670/nijirar.pdfIn PDF document text
    • http://bobawolep.trattoriatotarobyob.com/uploads/1/3/1/3/131383791/sebipawarirubawabab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6236/1245/files/d_d_unearthed_arcana_classes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3356/2010/files/54906721325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/97501480046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/calendario_2020_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/xesiwor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/10845550057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1979/6633/files/thomson_reuters_journal_citation_report_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2419/4468/files/85013544498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/ubqari_magazine_june_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2823/3887/files/68449228321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5011/3943/files/nupas_cadmatic_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/cessna_421c_service_manual.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007100.bin
63301ccd08eebf58b9791e4dd978e2f8d542eeb51c123bee5a09c0cea5225b49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7100 5252 bytes
font_01_sfnt_off000082c8.bin
12eea6b0699bb6bb5d72ebe6ecd43cd6bdc77fe2231b3d9e50ed7fade75178dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C8 10292 bytes

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